./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps6-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_ps6-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 2b375ae29a973823eea93f22f40d893acb563fa864c4860e04525925a120d938 --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 20:05:42,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 20:05:42,988 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 20:05:42,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 20:05:42,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 20:05:43,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 20:05:43,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 20:05:43,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 20:05:43,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 20:05:43,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 20:05:43,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 20:05:43,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 20:05:43,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 20:05:43,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 20:05:43,028 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 20:05:43,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 20:05:43,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 20:05:43,029 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 20:05:43,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 20:05:43,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 20:05:43,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 20:05:43,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 20:05:43,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 20:05:43,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 20:05:43,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 20:05:43,031 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 20:05:43,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 20:05:43,032 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 20:05:43,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 20:05:43,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 20:05:43,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 20:05:43,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 20:05:43,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:05:43,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 20:05:43,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 20:05:43,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 20:05:43,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 20:05:43,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 20:05:43,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 20:05:43,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 20:05:43,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 20:05:43,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 20:05:43,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b375ae29a973823eea93f22f40d893acb563fa864c4860e04525925a120d938 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 20:05:43,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 20:05:43,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 20:05:43,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 20:05:43,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 20:05:43,382 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 20:05:43,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps6-ll.c [2024-09-12 20:05:44,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 20:05:45,196 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 20:05:45,197 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps6-ll.c [2024-09-12 20:05:45,205 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/cf1a37383/2071a60671c14b51b1f37ce983612d39/FLAG1a10c7381 [2024-09-12 20:05:45,216 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/cf1a37383/2071a60671c14b51b1f37ce983612d39 [2024-09-12 20:05:45,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 20:05:45,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 20:05:45,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 20:05:45,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 20:05:45,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 20:05:45,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1c15cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45, skipping insertion in model container [2024-09-12 20:05:45,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 20:05:45,355 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_ps6-ll.c[987,1000] [2024-09-12 20:05:45,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:05:45,387 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 20:05:45,398 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_ps6-ll.c[987,1000] [2024-09-12 20:05:45,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:05:45,438 INFO L204 MainTranslator]: Completed translation [2024-09-12 20:05:45,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45 WrapperNode [2024-09-12 20:05:45,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 20:05:45,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 20:05:45,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 20:05:45,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 20:05:45,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,465 INFO L138 Inliner]: procedures = 16, calls = 83, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 20:05:45,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 20:05:45,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 20:05:45,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 20:05:45,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 20:05:45,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,485 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,517 INFO L175 MemorySlicer]: Split 60 memory accesses to 5 slices as follows [2, 5, 45, 4, 4]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 2, 1, 2]. [2024-09-12 20:05:45,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,540 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 20:05:45,547 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 20:05:45,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 20:05:45,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 20:05:45,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (1/1) ... [2024-09-12 20:05:45,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:05:45,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:45,590 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 20:05:45,594 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 20:05:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 20:05:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 20:05:45,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 20:05:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 20:05:45,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 20:05:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 20:05:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 20:05:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 20:05:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-12 20:05:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-12 20:05:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 20:05:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 20:05:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 20:05:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 20:05:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-12 20:05:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-12 20:05:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 20:05:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 20:05:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 20:05:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 20:05:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 20:05:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 20:05:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 20:05:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-12 20:05:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-12 20:05:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 20:05:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 20:05:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_35_0 [2024-09-12 20:05:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_35_0 [2024-09-12 20:05:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 20:05:45,720 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 20:05:45,722 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 20:05:47,841 INFO L? ?]: Removed 499 outVars from TransFormulas that were not future-live. [2024-09-12 20:05:47,842 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 20:05:47,862 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 20:05:47,863 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 20:05:47,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:05:47 BoogieIcfgContainer [2024-09-12 20:05:47,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 20:05:47,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 20:05:47,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 20:05:47,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 20:05:47,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 08:05:45" (1/3) ... [2024-09-12 20:05:47,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175d21b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:05:47, skipping insertion in model container [2024-09-12 20:05:47,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:45" (2/3) ... [2024-09-12 20:05:47,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175d21b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:05:47, skipping insertion in model container [2024-09-12 20:05:47,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:05:47" (3/3) ... [2024-09-12 20:05:47,869 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps6-ll.c [2024-09-12 20:05:47,881 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 20:05:47,882 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 103 error locations. [2024-09-12 20:05:47,924 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 20:05:47,929 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;@3ebb4490, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 20:05:47,929 INFO L337 AbstractCegarLoop]: Starting to check reachability of 103 error locations. [2024-09-12 20:05:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 121 states have (on average 1.884297520661157) internal successors, (228), 225 states have internal predecessors, (228), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 20:05:47,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 20:05:47,938 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:47,939 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:47,939 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:05:47,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash 669292560, now seen corresponding path program 1 times [2024-09-12 20:05:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:47,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944541674] [2024-09-12 20:05:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:48,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:48,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:48,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:48,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944541674] [2024-09-12 20:05:48,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944541674] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:48,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:48,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 20:05:48,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801281481] [2024-09-12 20:05:48,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:48,100 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 20:05:48,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:48,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 20:05:48,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 20:05:48,124 INFO L87 Difference]: Start difference. First operand has 238 states, 121 states have (on average 1.884297520661157) internal successors, (228), 225 states have internal predecessors, (228), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:48,182 INFO L93 Difference]: Finished difference Result 468 states and 484 transitions. [2024-09-12 20:05:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 20:05:48,191 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-12 20:05:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:48,201 INFO L225 Difference]: With dead ends: 468 [2024-09-12 20:05:48,203 INFO L226 Difference]: Without dead ends: 234 [2024-09-12 20:05:48,208 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 20:05:48,212 INFO L434 NwaCegarLoop]: 239 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, 239 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 20:05:48,213 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:05:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-09-12 20:05:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2024-09-12 20:05:48,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 119 states have (on average 1.8739495798319328) internal successors, (223), 223 states have internal predecessors, (223), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 20:05:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 237 transitions. [2024-09-12 20:05:48,272 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 237 transitions. Word has length 15 [2024-09-12 20:05:48,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:48,276 INFO L474 AbstractCegarLoop]: Abstraction has 234 states and 237 transitions. [2024-09-12 20:05:48,277 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:48,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:48,277 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 237 transitions. [2024-09-12 20:05:48,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 20:05:48,278 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:48,278 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:48,278 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 20:05:48,278 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:05:48,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:48,278 INFO L85 PathProgramCache]: Analyzing trace with hash -140054066, now seen corresponding path program 1 times [2024-09-12 20:05:48,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:48,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191466718] [2024-09-12 20:05:48,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:48,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:48,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:48,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:48,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:48,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191466718] [2024-09-12 20:05:48,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191466718] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:48,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:48,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:48,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257141057] [2024-09-12 20:05:48,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:48,563 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:48,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:48,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:48,565 INFO L87 Difference]: Start difference. First operand 234 states and 237 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:49,407 INFO L93 Difference]: Finished difference Result 424 states and 430 transitions. [2024-09-12 20:05:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:49,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-12 20:05:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:49,410 INFO L225 Difference]: With dead ends: 424 [2024-09-12 20:05:49,413 INFO L226 Difference]: Without dead ends: 412 [2024-09-12 20:05:49,414 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:05:49,415 INFO L434 NwaCegarLoop]: 178 mSDtfsCounter, 322 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:49,415 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 898 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 20:05:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-09-12 20:05:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 283. [2024-09-12 20:05:49,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.8132530120481927) internal successors, (301), 270 states have internal predecessors, (301), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:49,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 318 transitions. [2024-09-12 20:05:49,459 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 318 transitions. Word has length 15 [2024-09-12 20:05:49,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:49,459 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 318 transitions. [2024-09-12 20:05:49,459 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:49,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 318 transitions. [2024-09-12 20:05:49,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-12 20:05:49,460 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:49,460 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:49,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 20:05:49,460 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_27_to_35_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:05:49,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:49,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1736423194, now seen corresponding path program 1 times [2024-09-12 20:05:49,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:49,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639924113] [2024-09-12 20:05:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:49,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:49,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:49,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:49,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:49,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639924113] [2024-09-12 20:05:49,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639924113] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:49,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:49,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:49,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150144540] [2024-09-12 20:05:49,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:49,682 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:49,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:49,684 INFO L87 Difference]: Start difference. First operand 283 states and 318 transitions. Second operand has 6 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:50,675 INFO L93 Difference]: Finished difference Result 412 states and 418 transitions. [2024-09-12 20:05:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-09-12 20:05:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:50,678 INFO L225 Difference]: With dead ends: 412 [2024-09-12 20:05:50,678 INFO L226 Difference]: Without dead ends: 402 [2024-09-12 20:05:50,678 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:05:50,679 INFO L434 NwaCegarLoop]: 178 mSDtfsCounter, 268 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:50,679 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 896 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 20:05:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-09-12 20:05:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 283. [2024-09-12 20:05:50,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.7530120481927711) internal successors, (291), 270 states have internal predecessors, (291), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:50,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 308 transitions. [2024-09-12 20:05:50,703 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 308 transitions. Word has length 27 [2024-09-12 20:05:50,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:50,704 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 308 transitions. [2024-09-12 20:05:50,704 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:50,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:50,704 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 308 transitions. [2024-09-12 20:05:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 20:05:50,705 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:50,705 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:50,705 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 20:05:50,706 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_27_to_35_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:05:50,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1837730940, now seen corresponding path program 1 times [2024-09-12 20:05:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:50,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775522191] [2024-09-12 20:05:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:50,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368491311] [2024-09-12 20:05:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:50,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:50,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:50,734 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 20:05:50,738 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 20:05:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:50,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-12 20:05:50,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:50,877 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 20:05:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:51,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:51,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775522191] [2024-09-12 20:05:51,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:51,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368491311] [2024-09-12 20:05:51,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368491311] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:51,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:51,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-09-12 20:05:51,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726673293] [2024-09-12 20:05:51,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:51,334 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 20:05:51,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 20:05:51,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:05:51,336 INFO L87 Difference]: Start difference. First operand 283 states and 308 transitions. Second operand has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:52,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:52,630 INFO L93 Difference]: Finished difference Result 402 states and 408 transitions. [2024-09-12 20:05:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:05:52,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-09-12 20:05:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:52,632 INFO L225 Difference]: With dead ends: 402 [2024-09-12 20:05:52,632 INFO L226 Difference]: Without dead ends: 400 [2024-09-12 20:05:52,632 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2024-09-12 20:05:52,633 INFO L434 NwaCegarLoop]: 176 mSDtfsCounter, 246 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:52,633 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 1198 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 20:05:52,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-09-12 20:05:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 283. [2024-09-12 20:05:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.7409638554216869) internal successors, (289), 270 states have internal predecessors, (289), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:52,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 306 transitions. [2024-09-12 20:05:52,651 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 306 transitions. Word has length 37 [2024-09-12 20:05:52,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:52,652 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 306 transitions. [2024-09-12 20:05:52,652 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:52,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 306 transitions. [2024-09-12 20:05:52,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 20:05:52,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:52,653 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:52,668 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 20:05:52,857 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:52,858 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_27_to_35_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:05:52,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:52,859 INFO L85 PathProgramCache]: Analyzing trace with hash -827868058, now seen corresponding path program 1 times [2024-09-12 20:05:52,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:52,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083229827] [2024-09-12 20:05:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:52,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:53,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:53,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:53,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:53,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083229827] [2024-09-12 20:05:53,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083229827] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:53,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:53,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:53,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61582767] [2024-09-12 20:05:53,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:53,005 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:53,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:53,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:53,006 INFO L87 Difference]: Start difference. First operand 283 states and 306 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:53,678 INFO L93 Difference]: Finished difference Result 400 states and 406 transitions. [2024-09-12 20:05:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:53,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2024-09-12 20:05:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:53,680 INFO L225 Difference]: With dead ends: 400 [2024-09-12 20:05:53,680 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 20:05:53,680 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:05:53,681 INFO L434 NwaCegarLoop]: 182 mSDtfsCounter, 216 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:53,681 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 907 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 20:05:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 20:05:53,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 283. [2024-09-12 20:05:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.6927710843373494) internal successors, (281), 270 states have internal predecessors, (281), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 298 transitions. [2024-09-12 20:05:53,692 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 298 transitions. Word has length 39 [2024-09-12 20:05:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:53,692 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 298 transitions. [2024-09-12 20:05:53,692 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:53,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 298 transitions. [2024-09-12 20:05:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 20:05:53,693 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:53,694 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:53,694 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 20:05:53,694 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_27_to_35_0Err32ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:05:53,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:53,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1445855250, now seen corresponding path program 1 times [2024-09-12 20:05:53,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:53,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022664556] [2024-09-12 20:05:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:53,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:53,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438264333] [2024-09-12 20:05:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:53,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:53,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:53,718 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 20:05:53,731 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 20:05:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:53,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 20:05:53,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:53,814 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 20:05:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:53,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:53,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:53,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022664556] [2024-09-12 20:05:53,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:53,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438264333] [2024-09-12 20:05:53,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438264333] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:53,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:53,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:05:53,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851895982] [2024-09-12 20:05:53,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:53,998 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:05:53,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:53,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:05:53,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:53,999 INFO L87 Difference]: Start difference. First operand 283 states and 298 transitions. Second operand has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:54,823 INFO L93 Difference]: Finished difference Result 392 states and 398 transitions. [2024-09-12 20:05:54,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:05:54,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2024-09-12 20:05:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:54,826 INFO L225 Difference]: With dead ends: 392 [2024-09-12 20:05:54,826 INFO L226 Difference]: Without dead ends: 390 [2024-09-12 20:05:54,826 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:05:54,826 INFO L434 NwaCegarLoop]: 179 mSDtfsCounter, 215 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:54,827 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 912 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 20:05:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-09-12 20:05:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 283. [2024-09-12 20:05:54,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.680722891566265) internal successors, (279), 270 states have internal predecessors, (279), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 296 transitions. [2024-09-12 20:05:54,842 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 296 transitions. Word has length 47 [2024-09-12 20:05:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:54,842 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 296 transitions. [2024-09-12 20:05:54,842 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:54,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 296 transitions. [2024-09-12 20:05:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 20:05:54,845 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:54,845 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:54,870 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 20:05:55,049 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 20:05:55,050 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_27_to_35_0Err34ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:05:55,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:55,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2102515920, now seen corresponding path program 1 times [2024-09-12 20:05:55,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:55,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760403259] [2024-09-12 20:05:55,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:55,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:55,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73001502] [2024-09-12 20:05:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:55,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:55,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:55,068 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 20:05:55,069 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 20:05:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:55,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 20:05:55,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:55,143 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 20:05:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:55,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:55,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760403259] [2024-09-12 20:05:55,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73001502] [2024-09-12 20:05:55,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73001502] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:55,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:55,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:55,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335865377] [2024-09-12 20:05:55,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:55,210 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:55,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:55,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:55,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:55,211 INFO L87 Difference]: Start difference. First operand 283 states and 296 transitions. Second operand has 6 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:55,606 INFO L93 Difference]: Finished difference Result 390 states and 396 transitions. [2024-09-12 20:05:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:55,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2024-09-12 20:05:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:55,609 INFO L225 Difference]: With dead ends: 390 [2024-09-12 20:05:55,609 INFO L226 Difference]: Without dead ends: 388 [2024-09-12 20:05:55,609 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 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 20:05:55,610 INFO L434 NwaCegarLoop]: 188 mSDtfsCounter, 186 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:55,610 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 931 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:05:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-09-12 20:05:55,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 283. [2024-09-12 20:05:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.6686746987951808) internal successors, (277), 270 states have internal predecessors, (277), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 294 transitions. [2024-09-12 20:05:55,621 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 294 transitions. Word has length 49 [2024-09-12 20:05:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:55,622 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 294 transitions. [2024-09-12 20:05:55,622 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:55,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 294 transitions. [2024-09-12 20:05:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-12 20:05:55,623 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:55,623 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:55,637 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 20:05:55,825 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 20:05:55,825 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_27_to_35_0Err36ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:05:55,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:55,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1883177394, now seen corresponding path program 1 times [2024-09-12 20:05:55,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:55,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957761110] [2024-09-12 20:05:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:55,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:55,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780880664] [2024-09-12 20:05:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:55,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:55,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:55,843 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 20:05:55,844 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 20:05:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:55,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 20:05:55,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:55,917 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 20:05:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:57,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:57,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:57,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957761110] [2024-09-12 20:05:57,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:57,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780880664] [2024-09-12 20:05:57,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780880664] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:57,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:57,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:05:57,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141230083] [2024-09-12 20:05:57,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:57,304 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:05:57,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:57,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:05:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:57,305 INFO L87 Difference]: Start difference. First operand 283 states and 294 transitions. Second operand has 8 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:01,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:01,664 INFO L93 Difference]: Finished difference Result 388 states and 394 transitions. [2024-09-12 20:06:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:06:01,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2024-09-12 20:06:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:01,666 INFO L225 Difference]: With dead ends: 388 [2024-09-12 20:06:01,666 INFO L226 Difference]: Without dead ends: 387 [2024-09-12 20:06:01,667 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:06:01,667 INFO L434 NwaCegarLoop]: 186 mSDtfsCounter, 193 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:01,667 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 904 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-09-12 20:06:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-12 20:06:01,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 283. [2024-09-12 20:06:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.6626506024096386) internal successors, (276), 270 states have internal predecessors, (276), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:06:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 293 transitions. [2024-09-12 20:06:01,694 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 293 transitions. Word has length 51 [2024-09-12 20:06:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:01,694 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 293 transitions. [2024-09-12 20:06:01,695 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:01,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:01,695 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 293 transitions. [2024-09-12 20:06:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-12 20:06:01,696 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:01,696 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:01,710 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 20:06:01,896 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:01,897 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_27_to_35_0Err37ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:01,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1751042695, now seen corresponding path program 1 times [2024-09-12 20:06:01,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:01,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253114778] [2024-09-12 20:06:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:01,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:01,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821365735] [2024-09-12 20:06:01,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:01,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:01,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:01,941 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 20:06:01,943 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 20:06:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:02,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 20:06:02,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:02,015 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 20:06:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:02,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:02,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253114778] [2024-09-12 20:06:02,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821365735] [2024-09-12 20:06:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821365735] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:02,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:02,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:06:02,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627829684] [2024-09-12 20:06:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:02,238 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:06:02,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:02,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:06:02,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:06:02,239 INFO L87 Difference]: Start difference. First operand 283 states and 293 transitions. Second operand has 6 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:04,596 INFO L93 Difference]: Finished difference Result 387 states and 393 transitions. [2024-09-12 20:06:04,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:06:04,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2024-09-12 20:06:04,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:04,598 INFO L225 Difference]: With dead ends: 387 [2024-09-12 20:06:04,598 INFO L226 Difference]: Without dead ends: 386 [2024-09-12 20:06:04,598 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:06:04,600 INFO L434 NwaCegarLoop]: 190 mSDtfsCounter, 179 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:04,600 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 882 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-09-12 20:06:04,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-09-12 20:06:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 283. [2024-09-12 20:06:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.6566265060240963) internal successors, (275), 270 states have internal predecessors, (275), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:06:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 292 transitions. [2024-09-12 20:06:04,626 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 292 transitions. Word has length 52 [2024-09-12 20:06:04,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:04,627 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 292 transitions. [2024-09-12 20:06:04,627 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:04,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:04,630 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 292 transitions. [2024-09-12 20:06:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 20:06:04,631 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:04,631 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:04,647 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 20:06:04,831 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:04,832 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_27_to_35_0Err38ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:04,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:04,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1552251540, now seen corresponding path program 1 times [2024-09-12 20:06:04,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:04,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493814866] [2024-09-12 20:06:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:04,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:04,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:04,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:04,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:04,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493814866] [2024-09-12 20:06:04,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493814866] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:04,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:04,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:06:04,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551526920] [2024-09-12 20:06:04,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:04,993 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:06:04,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:04,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:06:04,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:06:04,994 INFO L87 Difference]: Start difference. First operand 283 states and 292 transitions. Second operand has 6 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:05,122 INFO L93 Difference]: Finished difference Result 392 states and 397 transitions. [2024-09-12 20:06:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:06:05,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2024-09-12 20:06:05,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:05,124 INFO L225 Difference]: With dead ends: 392 [2024-09-12 20:06:05,124 INFO L226 Difference]: Without dead ends: 390 [2024-09-12 20:06:05,125 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:06:05,125 INFO L434 NwaCegarLoop]: 224 mSDtfsCounter, 195 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:05,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1117 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:06:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-09-12 20:06:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 283. [2024-09-12 20:06:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.644578313253012) internal successors, (273), 270 states have internal predecessors, (273), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:06:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 290 transitions. [2024-09-12 20:06:05,141 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 290 transitions. Word has length 53 [2024-09-12 20:06:05,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:05,141 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 290 transitions. [2024-09-12 20:06:05,141 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:05,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:05,142 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 290 transitions. [2024-09-12 20:06:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 20:06:05,143 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:05,144 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:05,144 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 20:06:05,144 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_27_to_35_0Err40ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:05,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1360085878, now seen corresponding path program 1 times [2024-09-12 20:06:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:05,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878034408] [2024-09-12 20:06:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:05,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:05,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:05,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:05,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878034408] [2024-09-12 20:06:05,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878034408] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:05,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:05,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:06:05,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519665129] [2024-09-12 20:06:05,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:05,401 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:06:05,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:05,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:06:05,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:06:05,401 INFO L87 Difference]: Start difference. First operand 283 states and 290 transitions. Second operand has 7 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:07,344 INFO L93 Difference]: Finished difference Result 390 states and 395 transitions. [2024-09-12 20:06:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:06:07,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 55 [2024-09-12 20:06:07,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:07,349 INFO L225 Difference]: With dead ends: 390 [2024-09-12 20:06:07,349 INFO L226 Difference]: Without dead ends: 389 [2024-09-12 20:06:07,349 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:06:07,350 INFO L434 NwaCegarLoop]: 225 mSDtfsCounter, 196 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:07,350 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1072 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-12 20:06:07,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-09-12 20:06:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 283. [2024-09-12 20:06:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.6385542168674698) internal successors, (272), 270 states have internal predecessors, (272), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:06:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 289 transitions. [2024-09-12 20:06:07,385 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 289 transitions. Word has length 55 [2024-09-12 20:06:07,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:07,385 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 289 transitions. [2024-09-12 20:06:07,385 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:07,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 289 transitions. [2024-09-12 20:06:07,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 20:06:07,388 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:07,388 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:07,389 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-09-12 20:06:07,389 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_27_to_35_0Err41ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:07,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash -787010499, now seen corresponding path program 1 times [2024-09-12 20:06:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472259993] [2024-09-12 20:06:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:07,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:07,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:07,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:07,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472259993] [2024-09-12 20:06:07,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472259993] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:07,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:06:07,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327817576] [2024-09-12 20:06:07,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:07,564 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:06:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:06:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:06:07,565 INFO L87 Difference]: Start difference. First operand 283 states and 289 transitions. Second operand has 6 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:09,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:09,122 INFO L93 Difference]: Finished difference Result 389 states and 394 transitions. [2024-09-12 20:06:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:06:09,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2024-09-12 20:06:09,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:09,124 INFO L225 Difference]: With dead ends: 389 [2024-09-12 20:06:09,124 INFO L226 Difference]: Without dead ends: 388 [2024-09-12 20:06:09,124 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:06:09,124 INFO L434 NwaCegarLoop]: 226 mSDtfsCounter, 188 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:09,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1045 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-12 20:06:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-09-12 20:06:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 283. [2024-09-12 20:06:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 166 states have (on average 1.6325301204819278) internal successors, (271), 270 states have internal predecessors, (271), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:06:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 288 transitions. [2024-09-12 20:06:09,141 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 288 transitions. Word has length 56 [2024-09-12 20:06:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:09,141 INFO L474 AbstractCegarLoop]: Abstraction has 283 states and 288 transitions. [2024-09-12 20:06:09,141 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:09,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 288 transitions. [2024-09-12 20:06:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 20:06:09,142 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:09,142 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:09,142 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-12 20:06:09,143 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:09,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:09,143 INFO L85 PathProgramCache]: Analyzing trace with hash -578481654, now seen corresponding path program 1 times [2024-09-12 20:06:09,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:09,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462247112] [2024-09-12 20:06:09,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:09,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:09,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266181354] [2024-09-12 20:06:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:09,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:09,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:09,159 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 20:06:09,160 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 20:06:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:09,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 20:06:09,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:09,254 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 20:06:09,257 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 20:06:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:09,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:09,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:09,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462247112] [2024-09-12 20:06:09,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:09,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266181354] [2024-09-12 20:06:09,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266181354] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:09,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:09,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-09-12 20:06:09,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455019824] [2024-09-12 20:06:09,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:09,638 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 20:06:09,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:09,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 20:06:09,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:06:09,639 INFO L87 Difference]: Start difference. First operand 283 states and 288 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:10,904 INFO L93 Difference]: Finished difference Result 374 states and 378 transitions. [2024-09-12 20:06:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:06:10,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 60 [2024-09-12 20:06:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:10,910 INFO L225 Difference]: With dead ends: 374 [2024-09-12 20:06:10,910 INFO L226 Difference]: Without dead ends: 372 [2024-09-12 20:06:10,910 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:06:10,912 INFO L434 NwaCegarLoop]: 181 mSDtfsCounter, 168 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:10,912 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1586 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 20:06:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-09-12 20:06:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 287. [2024-09-12 20:06:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 169 states have (on average 1.621301775147929) internal successors, (274), 273 states have internal predecessors, (274), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:06:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 291 transitions. [2024-09-12 20:06:10,930 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 291 transitions. Word has length 60 [2024-09-12 20:06:10,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:10,930 INFO L474 AbstractCegarLoop]: Abstraction has 287 states and 291 transitions. [2024-09-12 20:06:10,930 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:06:10,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 291 transitions. [2024-09-12 20:06:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 20:06:10,931 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:10,931 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:10,945 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 20:06:11,132 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 20:06:11,133 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_27_to_35_0Err42ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:11,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:11,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1702634792, now seen corresponding path program 1 times [2024-09-12 20:06:11,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:11,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448295460] [2024-09-12 20:06:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:11,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 20:06:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:11,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:11,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448295460] [2024-09-12 20:06:11,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448295460] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:11,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:11,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:06:11,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438564081] [2024-09-12 20:06:11,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:11,322 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:06:11,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:11,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:06:11,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:06:11,323 INFO L87 Difference]: Start difference. First operand 287 states and 291 transitions. Second operand has 7 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:11,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:11,437 INFO L93 Difference]: Finished difference Result 387 states and 392 transitions. [2024-09-12 20:06:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:06:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 64 [2024-09-12 20:06:11,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:11,442 INFO L225 Difference]: With dead ends: 387 [2024-09-12 20:06:11,443 INFO L226 Difference]: Without dead ends: 386 [2024-09-12 20:06:11,443 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:06:11,443 INFO L434 NwaCegarLoop]: 228 mSDtfsCounter, 150 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:11,443 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1346 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:06:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-09-12 20:06:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 288. [2024-09-12 20:06:11,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 170 states have (on average 1.6176470588235294) internal successors, (275), 274 states have internal predecessors, (275), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:06:11,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 292 transitions. [2024-09-12 20:06:11,469 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 292 transitions. Word has length 64 [2024-09-12 20:06:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:11,469 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 292 transitions. [2024-09-12 20:06:11,470 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:11,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 292 transitions. [2024-09-12 20:06:11,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-12 20:06:11,471 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:11,471 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:11,471 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-12 20:06:11,471 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_27_to_35_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:11,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1242070747, now seen corresponding path program 1 times [2024-09-12 20:06:11,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:11,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077916677] [2024-09-12 20:06:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 20:06:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:11,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:11,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077916677] [2024-09-12 20:06:11,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077916677] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:11,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:11,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:06:11,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42344311] [2024-09-12 20:06:11,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:11,675 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:06:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:11,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:06:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:06:11,676 INFO L87 Difference]: Start difference. First operand 288 states and 292 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:06:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:11,775 INFO L93 Difference]: Finished difference Result 288 states and 292 transitions. [2024-09-12 20:06:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:06:11,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 65 [2024-09-12 20:06:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:11,778 INFO L225 Difference]: With dead ends: 288 [2024-09-12 20:06:11,778 INFO L226 Difference]: Without dead ends: 287 [2024-09-12 20:06:11,779 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:06:11,779 INFO L434 NwaCegarLoop]: 225 mSDtfsCounter, 275 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:11,781 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1014 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:06:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-09-12 20:06:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-09-12 20:06:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 170 states have (on average 1.611764705882353) internal successors, (274), 273 states have internal predecessors, (274), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:06:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 291 transitions. [2024-09-12 20:06:11,804 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 291 transitions. Word has length 65 [2024-09-12 20:06:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:11,805 INFO L474 AbstractCegarLoop]: Abstraction has 287 states and 291 transitions. [2024-09-12 20:06:11,805 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:06:11,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 291 transitions. [2024-09-12 20:06:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-12 20:06:11,806 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:11,807 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:11,807 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-09-12 20:06:11,807 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_27_to_35_0Err44ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:11,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:11,807 INFO L85 PathProgramCache]: Analyzing trace with hash 150512762, now seen corresponding path program 1 times [2024-09-12 20:06:11,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:11,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530401119] [2024-09-12 20:06:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 20:06:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:11,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:11,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530401119] [2024-09-12 20:06:11,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530401119] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:11,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:11,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:06:11,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775214414] [2024-09-12 20:06:11,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:11,966 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:06:11,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:11,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:06:11,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:06:11,967 INFO L87 Difference]: Start difference. First operand 287 states and 291 transitions. Second operand has 6 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:12,149 INFO L93 Difference]: Finished difference Result 383 states and 388 transitions. [2024-09-12 20:06:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:06:12,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2024-09-12 20:06:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:12,151 INFO L225 Difference]: With dead ends: 383 [2024-09-12 20:06:12,152 INFO L226 Difference]: Without dead ends: 381 [2024-09-12 20:06:12,152 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 20:06:12,152 INFO L434 NwaCegarLoop]: 196 mSDtfsCounter, 145 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:12,153 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 954 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:06:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-09-12 20:06:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 290. [2024-09-12 20:06:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 173 states have (on average 1.6011560693641618) internal successors, (277), 276 states have internal predecessors, (277), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:06:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 294 transitions. [2024-09-12 20:06:12,181 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 294 transitions. Word has length 66 [2024-09-12 20:06:12,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:12,182 INFO L474 AbstractCegarLoop]: Abstraction has 290 states and 294 transitions. [2024-09-12 20:06:12,182 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:12,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 294 transitions. [2024-09-12 20:06:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-12 20:06:12,183 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:12,183 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:12,183 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-09-12 20:06:12,183 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:12,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash 370953480, now seen corresponding path program 1 times [2024-09-12 20:06:12,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:12,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989737817] [2024-09-12 20:06:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:12,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:12,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:12,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:12,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:06:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:12,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 20:06:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:12,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:12,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989737817] [2024-09-12 20:06:12,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989737817] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:12,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:12,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:06:12,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643340423] [2024-09-12 20:06:12,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:12,332 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:06:12,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:06:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:06:12,333 INFO L87 Difference]: Start difference. First operand 290 states and 294 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:13,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:13,299 INFO L93 Difference]: Finished difference Result 383 states and 388 transitions. [2024-09-12 20:06:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:06:13,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 67 [2024-09-12 20:06:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:13,302 INFO L225 Difference]: With dead ends: 383 [2024-09-12 20:06:13,302 INFO L226 Difference]: Without dead ends: 371 [2024-09-12 20:06:13,302 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:06:13,303 INFO L434 NwaCegarLoop]: 163 mSDtfsCounter, 247 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:13,303 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 642 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 20:06:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-09-12 20:06:13,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 305. [2024-09-12 20:06:13,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 187 states have (on average 1.5561497326203209) internal successors, (291), 289 states have internal predecessors, (291), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-12 20:06:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 309 transitions. [2024-09-12 20:06:13,337 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 309 transitions. Word has length 67 [2024-09-12 20:06:13,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:13,337 INFO L474 AbstractCegarLoop]: Abstraction has 305 states and 309 transitions. [2024-09-12 20:06:13,337 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:13,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 309 transitions. [2024-09-12 20:06:13,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 20:06:13,338 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:13,338 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:13,338 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-09-12 20:06:13,339 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_27_to_35_0Err46ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:13,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1386115556, now seen corresponding path program 1 times [2024-09-12 20:06:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:13,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349586569] [2024-09-12 20:06:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:13,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:13,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101134795] [2024-09-12 20:06:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:13,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:13,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:13,365 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 20:06:13,375 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 20:06:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:13,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 20:06:13,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:13,457 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 20:06:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:13,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:13,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:13,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349586569] [2024-09-12 20:06:13,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:13,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101134795] [2024-09-12 20:06:13,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101134795] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:13,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:13,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:06:13,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693924624] [2024-09-12 20:06:13,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:13,607 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:06:13,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:13,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:06:13,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:06:13,610 INFO L87 Difference]: Start difference. First operand 305 states and 309 transitions. Second operand has 8 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:14,165 INFO L93 Difference]: Finished difference Result 393 states and 406 transitions. [2024-09-12 20:06:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:06:14,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2024-09-12 20:06:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:14,167 INFO L225 Difference]: With dead ends: 393 [2024-09-12 20:06:14,167 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 20:06:14,168 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:06:14,168 INFO L434 NwaCegarLoop]: 175 mSDtfsCounter, 227 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:14,168 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 807 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:06:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 20:06:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 347. [2024-09-12 20:06:14,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 226 states have (on average 1.6150442477876106) internal successors, (365), 329 states have internal predecessors, (365), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:14,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 386 transitions. [2024-09-12 20:06:14,195 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 386 transitions. Word has length 68 [2024-09-12 20:06:14,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:14,196 INFO L474 AbstractCegarLoop]: Abstraction has 347 states and 386 transitions. [2024-09-12 20:06:14,196 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:14,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:14,196 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 386 transitions. [2024-09-12 20:06:14,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 20:06:14,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:14,197 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:14,209 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 20:06:14,400 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 20:06:14,401 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_27_to_35_0Err47ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:14,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:14,401 INFO L85 PathProgramCache]: Analyzing trace with hash -19909015, now seen corresponding path program 1 times [2024-09-12 20:06:14,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:14,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708763598] [2024-09-12 20:06:14,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:14,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:14,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769552707] [2024-09-12 20:06:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:14,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:14,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:14,420 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 20:06:14,420 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 20:06:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:14,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 20:06:14,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:14,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:06:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:14,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:14,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708763598] [2024-09-12 20:06:14,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769552707] [2024-09-12 20:06:14,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769552707] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:14,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:14,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:06:14,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129943488] [2024-09-12 20:06:14,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:14,638 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:06:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:14,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:06:14,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:06:14,639 INFO L87 Difference]: Start difference. First operand 347 states and 386 transitions. Second operand has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:15,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:15,151 INFO L93 Difference]: Finished difference Result 393 states and 405 transitions. [2024-09-12 20:06:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:06:15,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 69 [2024-09-12 20:06:15,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:15,153 INFO L225 Difference]: With dead ends: 393 [2024-09-12 20:06:15,153 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 20:06:15,153 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:06:15,154 INFO L434 NwaCegarLoop]: 176 mSDtfsCounter, 146 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:15,154 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 973 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:06:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 20:06:15,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 348. [2024-09-12 20:06:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 227 states have (on average 1.6123348017621146) internal successors, (366), 330 states have internal predecessors, (366), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 387 transitions. [2024-09-12 20:06:15,189 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 387 transitions. Word has length 69 [2024-09-12 20:06:15,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:15,189 INFO L474 AbstractCegarLoop]: Abstraction has 348 states and 387 transitions. [2024-09-12 20:06:15,189 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:15,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:15,189 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 387 transitions. [2024-09-12 20:06:15,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-12 20:06:15,190 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:15,190 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:15,203 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 20:06:15,390 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:15,390 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_27_to_35_0Err48ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:15,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:15,391 INFO L85 PathProgramCache]: Analyzing trace with hash -617179202, now seen corresponding path program 1 times [2024-09-12 20:06:15,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:15,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749456634] [2024-09-12 20:06:15,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:15,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:15,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15695727] [2024-09-12 20:06:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:15,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:15,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:15,412 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 20:06:15,414 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 20:06:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:15,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-12 20:06:15,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:15,502 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 20:06:15,596 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 20:06:15,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-09-12 20:06:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:15,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:15,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749456634] [2024-09-12 20:06:15,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15695727] [2024-09-12 20:06:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15695727] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:15,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:15,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:06:15,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204705473] [2024-09-12 20:06:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:15,629 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:06:15,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:15,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:06:15,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:06:15,629 INFO L87 Difference]: Start difference. First operand 348 states and 387 transitions. Second operand has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:16,141 INFO L93 Difference]: Finished difference Result 393 states and 404 transitions. [2024-09-12 20:06:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:06:16,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 70 [2024-09-12 20:06:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:16,143 INFO L225 Difference]: With dead ends: 393 [2024-09-12 20:06:16,143 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 20:06:16,144 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:06:16,144 INFO L434 NwaCegarLoop]: 177 mSDtfsCounter, 153 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:16,144 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1389 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:06:16,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 20:06:16,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 349. [2024-09-12 20:06:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 228 states have (on average 1.6096491228070176) internal successors, (367), 331 states have internal predecessors, (367), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 388 transitions. [2024-09-12 20:06:16,178 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 388 transitions. Word has length 70 [2024-09-12 20:06:16,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:16,178 INFO L474 AbstractCegarLoop]: Abstraction has 349 states and 388 transitions. [2024-09-12 20:06:16,178 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:16,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:16,179 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 388 transitions. [2024-09-12 20:06:16,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-12 20:06:16,179 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:16,179 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:16,196 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 20:06:16,380 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:16,380 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_27_to_35_0Err49ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:16,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1952685813, now seen corresponding path program 1 times [2024-09-12 20:06:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:16,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170973068] [2024-09-12 20:06:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:16,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375769827] [2024-09-12 20:06:16,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:16,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:16,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:16,406 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 20:06:16,408 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 20:06:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:16,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 20:06:16,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:16,513 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 20:06:16,624 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 20:06:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:16,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:16,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170973068] [2024-09-12 20:06:16,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375769827] [2024-09-12 20:06:16,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375769827] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:16,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:16,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:06:16,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121844523] [2024-09-12 20:06:16,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:16,659 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:06:16,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:16,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:06:16,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:06:16,659 INFO L87 Difference]: Start difference. First operand 349 states and 388 transitions. Second operand has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:17,088 INFO L93 Difference]: Finished difference Result 393 states and 403 transitions. [2024-09-12 20:06:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:06:17,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 71 [2024-09-12 20:06:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:17,090 INFO L225 Difference]: With dead ends: 393 [2024-09-12 20:06:17,090 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 20:06:17,091 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:06:17,091 INFO L434 NwaCegarLoop]: 178 mSDtfsCounter, 232 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:17,091 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 982 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:06:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 20:06:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 350. [2024-09-12 20:06:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 229 states have (on average 1.6069868995633187) internal successors, (368), 332 states have internal predecessors, (368), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 389 transitions. [2024-09-12 20:06:17,123 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 389 transitions. Word has length 71 [2024-09-12 20:06:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:17,123 INFO L474 AbstractCegarLoop]: Abstraction has 350 states and 389 transitions. [2024-09-12 20:06:17,123 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:17,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:17,123 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 389 transitions. [2024-09-12 20:06:17,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 20:06:17,124 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:17,124 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:17,136 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 20:06:17,324 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 20:06:17,325 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_27_to_35_0Err50ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:17,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:17,325 INFO L85 PathProgramCache]: Analyzing trace with hash -403717792, now seen corresponding path program 1 times [2024-09-12 20:06:17,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:17,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749181940] [2024-09-12 20:06:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:17,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:17,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392242117] [2024-09-12 20:06:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:17,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:17,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:17,345 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 20:06:17,346 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 20:06:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:17,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-12 20:06:17,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:17,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:06:17,604 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 20:06:17,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-09-12 20:06:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:17,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:17,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:17,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749181940] [2024-09-12 20:06:17,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:17,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392242117] [2024-09-12 20:06:17,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392242117] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:17,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:17,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:06:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182158564] [2024-09-12 20:06:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:17,702 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:06:17,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:06:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:06:17,703 INFO L87 Difference]: Start difference. First operand 350 states and 389 transitions. Second operand has 10 states, 8 states have (on average 8.0) internal successors, (64), 9 states have internal predecessors, (64), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:18,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:18,256 INFO L93 Difference]: Finished difference Result 393 states and 402 transitions. [2024-09-12 20:06:18,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:06:18,256 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.0) internal successors, (64), 9 states have internal predecessors, (64), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2024-09-12 20:06:18,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:18,258 INFO L225 Difference]: With dead ends: 393 [2024-09-12 20:06:18,258 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 20:06:18,258 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:06:18,259 INFO L434 NwaCegarLoop]: 179 mSDtfsCounter, 155 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:18,259 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1261 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:06:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 20:06:18,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 351. [2024-09-12 20:06:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 230 states have (on average 1.6043478260869566) internal successors, (369), 333 states have internal predecessors, (369), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:18,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 390 transitions. [2024-09-12 20:06:18,304 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 390 transitions. Word has length 72 [2024-09-12 20:06:18,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:18,306 INFO L474 AbstractCegarLoop]: Abstraction has 351 states and 390 transitions. [2024-09-12 20:06:18,306 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.0) internal successors, (64), 9 states have internal predecessors, (64), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:18,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 390 transitions. [2024-09-12 20:06:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-12 20:06:18,306 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:18,307 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:18,336 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 20:06:18,507 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:18,507 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_27_to_35_0Err51ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:18,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:18,508 INFO L85 PathProgramCache]: Analyzing trace with hash 369650605, now seen corresponding path program 1 times [2024-09-12 20:06:18,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:18,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475494613] [2024-09-12 20:06:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:18,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:18,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584461959] [2024-09-12 20:06:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:18,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:18,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:18,530 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 20:06:18,535 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 20:06:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:18,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 20:06:18,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:18,638 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 20:06:18,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:06:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:18,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:18,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:18,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475494613] [2024-09-12 20:06:18,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:18,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584461959] [2024-09-12 20:06:18,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584461959] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:18,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:18,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:06:18,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083723385] [2024-09-12 20:06:18,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:18,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:06:18,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:18,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:06:18,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:06:18,799 INFO L87 Difference]: Start difference. First operand 351 states and 390 transitions. Second operand has 10 states, 8 states have (on average 8.125) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:19,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:19,398 INFO L93 Difference]: Finished difference Result 393 states and 401 transitions. [2024-09-12 20:06:19,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:06:19,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.125) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 73 [2024-09-12 20:06:19,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:19,400 INFO L225 Difference]: With dead ends: 393 [2024-09-12 20:06:19,400 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 20:06:19,400 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:06:19,401 INFO L434 NwaCegarLoop]: 180 mSDtfsCounter, 154 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:19,401 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1266 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:06:19,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 20:06:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 352. [2024-09-12 20:06:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 231 states have (on average 1.6017316017316017) internal successors, (370), 334 states have internal predecessors, (370), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 391 transitions. [2024-09-12 20:06:19,462 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 391 transitions. Word has length 73 [2024-09-12 20:06:19,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:19,462 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 391 transitions. [2024-09-12 20:06:19,463 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.125) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:19,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 391 transitions. [2024-09-12 20:06:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-12 20:06:19,463 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:19,464 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:19,478 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 20:06:19,664 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 20:06:19,664 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_27_to_35_0Err52ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:19,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:19,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1425732862, now seen corresponding path program 1 times [2024-09-12 20:06:19,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:19,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552020540] [2024-09-12 20:06:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:19,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140935414] [2024-09-12 20:06:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:19,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:19,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:19,688 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 20:06:19,689 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 20:06:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:19,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 20:06:19,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:19,785 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 20:06:19,878 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 20:06:19,942 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 43 treesize of output 19 [2024-09-12 20:06:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:19,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:19,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:19,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552020540] [2024-09-12 20:06:19,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:19,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140935414] [2024-09-12 20:06:19,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140935414] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:19,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:19,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-12 20:06:19,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79567464] [2024-09-12 20:06:19,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:19,960 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:06:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:06:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:06:19,961 INFO L87 Difference]: Start difference. First operand 352 states and 391 transitions. Second operand has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:20,601 INFO L93 Difference]: Finished difference Result 393 states and 400 transitions. [2024-09-12 20:06:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 20:06:20,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2024-09-12 20:06:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:20,603 INFO L225 Difference]: With dead ends: 393 [2024-09-12 20:06:20,603 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 20:06:20,604 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:06:20,604 INFO L434 NwaCegarLoop]: 181 mSDtfsCounter, 145 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:20,604 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1332 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 20:06:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 20:06:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 353. [2024-09-12 20:06:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 232 states have (on average 1.5991379310344827) internal successors, (371), 335 states have internal predecessors, (371), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 392 transitions. [2024-09-12 20:06:20,635 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 392 transitions. Word has length 74 [2024-09-12 20:06:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:20,635 INFO L474 AbstractCegarLoop]: Abstraction has 353 states and 392 transitions. [2024-09-12 20:06:20,635 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:20,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 392 transitions. [2024-09-12 20:06:20,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-09-12 20:06:20,636 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:20,636 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:20,650 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 20:06:20,836 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:20,837 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_27_to_35_0Err53ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:20,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1248045489, now seen corresponding path program 1 times [2024-09-12 20:06:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:20,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455027395] [2024-09-12 20:06:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524506778] [2024-09-12 20:06:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:20,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:20,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:20,861 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 20:06:20,863 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 20:06:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:20,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 20:06:20,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:20,960 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 20:06:21,042 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 20:06:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:21,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455027395] [2024-09-12 20:06:21,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524506778] [2024-09-12 20:06:21,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524506778] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:21,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:21,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-12 20:06:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713680076] [2024-09-12 20:06:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:21,140 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:06:21,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:06:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:06:21,140 INFO L87 Difference]: Start difference. First operand 353 states and 392 transitions. Second operand has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:21,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:21,749 INFO L93 Difference]: Finished difference Result 393 states and 399 transitions. [2024-09-12 20:06:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 20:06:21,749 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 75 [2024-09-12 20:06:21,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:21,751 INFO L225 Difference]: With dead ends: 393 [2024-09-12 20:06:21,751 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 20:06:21,751 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:06:21,752 INFO L434 NwaCegarLoop]: 182 mSDtfsCounter, 148 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:21,752 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1419 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:06:21,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 20:06:21,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 354. [2024-09-12 20:06:21,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 233 states have (on average 1.5965665236051503) internal successors, (372), 336 states have internal predecessors, (372), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 393 transitions. [2024-09-12 20:06:21,785 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 393 transitions. Word has length 75 [2024-09-12 20:06:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:21,785 INFO L474 AbstractCegarLoop]: Abstraction has 354 states and 393 transitions. [2024-09-12 20:06:21,785 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:21,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 393 transitions. [2024-09-12 20:06:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-12 20:06:21,786 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:21,786 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:21,798 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 20:06:21,986 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 20:06:21,987 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_27_to_35_0Err54ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:21,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash -34704220, now seen corresponding path program 1 times [2024-09-12 20:06:21,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:21,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374710136] [2024-09-12 20:06:21,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:21,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:22,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:22,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:22,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 20:06:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:22,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:22,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374710136] [2024-09-12 20:06:22,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374710136] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:22,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:22,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:06:22,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735857593] [2024-09-12 20:06:22,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:22,299 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:06:22,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:22,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:06:22,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:06:22,301 INFO L87 Difference]: Start difference. First operand 354 states and 393 transitions. Second operand has 7 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:23,281 INFO L93 Difference]: Finished difference Result 384 states and 397 transitions. [2024-09-12 20:06:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:06:23,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 76 [2024-09-12 20:06:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:23,283 INFO L225 Difference]: With dead ends: 384 [2024-09-12 20:06:23,283 INFO L226 Difference]: Without dead ends: 383 [2024-09-12 20:06:23,284 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:06:23,284 INFO L434 NwaCegarLoop]: 227 mSDtfsCounter, 132 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:23,284 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1316 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 20:06:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-09-12 20:06:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 355. [2024-09-12 20:06:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 234 states have (on average 1.5940170940170941) internal successors, (373), 337 states have internal predecessors, (373), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 394 transitions. [2024-09-12 20:06:23,353 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 394 transitions. Word has length 76 [2024-09-12 20:06:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:23,354 INFO L474 AbstractCegarLoop]: Abstraction has 355 states and 394 transitions. [2024-09-12 20:06:23,354 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:23,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:23,354 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 394 transitions. [2024-09-12 20:06:23,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 20:06:23,354 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:23,354 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:23,355 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-09-12 20:06:23,355 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_27_to_35_0Err55ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:23,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1075830543, now seen corresponding path program 1 times [2024-09-12 20:06:23,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:23,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572010342] [2024-09-12 20:06:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:23,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:23,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:23,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:23,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 20:06:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:23,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:23,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572010342] [2024-09-12 20:06:23,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572010342] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:23,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:23,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:06:23,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413434635] [2024-09-12 20:06:23,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:23,611 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:06:23,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:23,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:06:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:06:23,612 INFO L87 Difference]: Start difference. First operand 355 states and 394 transitions. Second operand has 6 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:24,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:24,178 INFO L93 Difference]: Finished difference Result 383 states and 396 transitions. [2024-09-12 20:06:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:06:24,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2024-09-12 20:06:24,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:24,181 INFO L225 Difference]: With dead ends: 383 [2024-09-12 20:06:24,181 INFO L226 Difference]: Without dead ends: 382 [2024-09-12 20:06:24,181 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 20:06:24,181 INFO L434 NwaCegarLoop]: 228 mSDtfsCounter, 129 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:24,182 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1112 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:06:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-09-12 20:06:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 356. [2024-09-12 20:06:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 235 states have (on average 1.5914893617021277) internal successors, (374), 338 states have internal predecessors, (374), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 395 transitions. [2024-09-12 20:06:24,247 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 395 transitions. Word has length 77 [2024-09-12 20:06:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:24,247 INFO L474 AbstractCegarLoop]: Abstraction has 356 states and 395 transitions. [2024-09-12 20:06:24,247 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:24,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 395 transitions. [2024-09-12 20:06:24,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-12 20:06:24,248 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:24,248 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:24,248 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-09-12 20:06:24,248 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:24,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:24,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1401615468, now seen corresponding path program 1 times [2024-09-12 20:06:24,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:24,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129277937] [2024-09-12 20:06:24,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:24,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:06:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 20:06:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:24,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:24,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129277937] [2024-09-12 20:06:24,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129277937] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:24,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:24,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:06:24,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280495177] [2024-09-12 20:06:24,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:24,383 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:06:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:24,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:06:24,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:06:24,384 INFO L87 Difference]: Start difference. First operand 356 states and 395 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:24,772 INFO L93 Difference]: Finished difference Result 388 states and 395 transitions. [2024-09-12 20:06:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:06:24,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 79 [2024-09-12 20:06:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:24,774 INFO L225 Difference]: With dead ends: 388 [2024-09-12 20:06:24,774 INFO L226 Difference]: Without dead ends: 387 [2024-09-12 20:06:24,775 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:06:24,775 INFO L434 NwaCegarLoop]: 148 mSDtfsCounter, 264 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:24,775 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 592 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:06:24,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-12 20:06:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 356. [2024-09-12 20:06:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 235 states have (on average 1.5872340425531914) internal successors, (373), 338 states have internal predecessors, (373), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 394 transitions. [2024-09-12 20:06:24,811 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 394 transitions. Word has length 79 [2024-09-12 20:06:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:24,811 INFO L474 AbstractCegarLoop]: Abstraction has 356 states and 394 transitions. [2024-09-12 20:06:24,811 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:24,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 394 transitions. [2024-09-12 20:06:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 20:06:24,812 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:24,812 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:24,812 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-09-12 20:06:24,812 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:24,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:24,812 INFO L85 PathProgramCache]: Analyzing trace with hash -500406478, now seen corresponding path program 1 times [2024-09-12 20:06:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:24,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997078828] [2024-09-12 20:06:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:24,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:06:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 20:06:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:24,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:24,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997078828] [2024-09-12 20:06:24,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997078828] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:24,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:24,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:06:24,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595703354] [2024-09-12 20:06:24,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:24,945 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:06:24,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:24,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:06:24,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:06:24,946 INFO L87 Difference]: Start difference. First operand 356 states and 394 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:25,512 INFO L93 Difference]: Finished difference Result 387 states and 394 transitions. [2024-09-12 20:06:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:06:25,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 80 [2024-09-12 20:06:25,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:25,514 INFO L225 Difference]: With dead ends: 387 [2024-09-12 20:06:25,514 INFO L226 Difference]: Without dead ends: 386 [2024-09-12 20:06:25,515 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:06:25,515 INFO L434 NwaCegarLoop]: 149 mSDtfsCounter, 261 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:25,515 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 595 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:06:25,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-09-12 20:06:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 356. [2024-09-12 20:06:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 235 states have (on average 1.5829787234042554) internal successors, (372), 338 states have internal predecessors, (372), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 393 transitions. [2024-09-12 20:06:25,558 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 393 transitions. Word has length 80 [2024-09-12 20:06:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:25,558 INFO L474 AbstractCegarLoop]: Abstraction has 356 states and 393 transitions. [2024-09-12 20:06:25,558 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:25,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 393 transitions. [2024-09-12 20:06:25,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-12 20:06:25,560 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:25,560 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:25,560 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-09-12 20:06:25,560 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:25,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:25,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1600282586, now seen corresponding path program 1 times [2024-09-12 20:06:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:25,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079582194] [2024-09-12 20:06:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:25,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:25,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:25,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:25,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 20:06:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:25,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079582194] [2024-09-12 20:06:25,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079582194] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749062955] [2024-09-12 20:06:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:25,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:25,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:25,793 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 20:06:25,794 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 20:06:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:25,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 20:06:25,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:25,914 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 20:06:25,997 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 20:06:26,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:06:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:26,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:26,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749062955] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:06:26,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:06:26,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 17 [2024-09-12 20:06:26,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747544687] [2024-09-12 20:06:26,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:26,170 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 20:06:26,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:26,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 20:06:26,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:06:26,171 INFO L87 Difference]: Start difference. First operand 356 states and 393 transitions. Second operand has 18 states, 15 states have (on average 9.466666666666667) internal successors, (142), 14 states have internal predecessors, (142), 7 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:06:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:29,784 INFO L93 Difference]: Finished difference Result 611 states and 622 transitions. [2024-09-12 20:06:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 20:06:29,785 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 9.466666666666667) internal successors, (142), 14 states have internal predecessors, (142), 7 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 81 [2024-09-12 20:06:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:29,791 INFO L225 Difference]: With dead ends: 611 [2024-09-12 20:06:29,791 INFO L226 Difference]: Without dead ends: 609 [2024-09-12 20:06:29,791 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-09-12 20:06:29,792 INFO L434 NwaCegarLoop]: 158 mSDtfsCounter, 991 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:29,792 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1795 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-09-12 20:06:29,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-09-12 20:06:29,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 474. [2024-09-12 20:06:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 345 states have (on average 1.6753623188405797) internal successors, (578), 450 states have internal predecessors, (578), 15 states have call successors, (15), 10 states have call predecessors, (15), 12 states have return successors, (18), 13 states have call predecessors, (18), 12 states have call successors, (18) [2024-09-12 20:06:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 611 transitions. [2024-09-12 20:06:29,846 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 611 transitions. Word has length 81 [2024-09-12 20:06:29,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:29,847 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 611 transitions. [2024-09-12 20:06:29,847 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 9.466666666666667) internal successors, (142), 14 states have internal predecessors, (142), 7 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:06:29,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 611 transitions. [2024-09-12 20:06:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-12 20:06:29,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:29,848 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:29,860 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 20:06:30,051 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:30,052 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:30,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:30,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1667268438, now seen corresponding path program 1 times [2024-09-12 20:06:30,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:30,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018272142] [2024-09-12 20:06:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:30,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588031204] [2024-09-12 20:06:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:30,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:30,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:30,072 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 20:06:30,074 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 20:06:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 20:06:30,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:30,172 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 20:06:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:30,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:06:30,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:30,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018272142] [2024-09-12 20:06:30,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:30,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588031204] [2024-09-12 20:06:30,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588031204] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:30,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:30,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 20:06:30,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306679910] [2024-09-12 20:06:30,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:30,241 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 20:06:30,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:30,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 20:06:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 20:06:30,242 INFO L87 Difference]: Start difference. First operand 474 states and 611 transitions. Second operand has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:31,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:31,043 INFO L93 Difference]: Finished difference Result 504 states and 611 transitions. [2024-09-12 20:06:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 20:06:31,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 81 [2024-09-12 20:06:31,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:31,048 INFO L225 Difference]: With dead ends: 504 [2024-09-12 20:06:31,048 INFO L226 Difference]: Without dead ends: 496 [2024-09-12 20:06:31,049 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:06:31,049 INFO L434 NwaCegarLoop]: 166 mSDtfsCounter, 154 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:31,049 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 574 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 20:06:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-09-12 20:06:31,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 474. [2024-09-12 20:06:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 345 states have (on average 1.6521739130434783) internal successors, (570), 450 states have internal predecessors, (570), 15 states have call successors, (15), 10 states have call predecessors, (15), 12 states have return successors, (18), 13 states have call predecessors, (18), 12 states have call successors, (18) [2024-09-12 20:06:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 603 transitions. [2024-09-12 20:06:31,112 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 603 transitions. Word has length 81 [2024-09-12 20:06:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:31,112 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 603 transitions. [2024-09-12 20:06:31,112 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:31,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 603 transitions. [2024-09-12 20:06:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-12 20:06:31,113 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:31,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:31,126 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-12 20:06:31,313 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:31,314 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_27_to_35_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:31,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:31,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1930847549, now seen corresponding path program 1 times [2024-09-12 20:06:31,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:31,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777849466] [2024-09-12 20:06:31,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:31,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:31,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:31,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 20:06:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:31,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:31,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777849466] [2024-09-12 20:06:31,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777849466] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:31,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210067121] [2024-09-12 20:06:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:31,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:31,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:31,536 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 20:06:31,541 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 20:06:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:31,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 20:06:31,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:31,641 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 20:06:31,723 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 20:06:31,738 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 20:06:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:31,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:31,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210067121] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:06:31,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:06:31,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 17 [2024-09-12 20:06:31,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096895955] [2024-09-12 20:06:31,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:31,887 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 20:06:31,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:31,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 20:06:31,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:06:31,887 INFO L87 Difference]: Start difference. First operand 474 states and 603 transitions. Second operand has 18 states, 15 states have (on average 9.6) internal successors, (144), 14 states have internal predecessors, (144), 7 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:06:34,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:34,923 INFO L93 Difference]: Finished difference Result 543 states and 607 transitions. [2024-09-12 20:06:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 20:06:34,923 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 9.6) internal successors, (144), 14 states have internal predecessors, (144), 7 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 82 [2024-09-12 20:06:34,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:34,925 INFO L225 Difference]: With dead ends: 543 [2024-09-12 20:06:34,925 INFO L226 Difference]: Without dead ends: 541 [2024-09-12 20:06:34,925 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2024-09-12 20:06:34,926 INFO L434 NwaCegarLoop]: 179 mSDtfsCounter, 1081 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:34,926 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1705 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-09-12 20:06:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-09-12 20:06:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 474. [2024-09-12 20:06:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 346 states have (on average 1.6358381502890174) internal successors, (566), 449 states have internal predecessors, (566), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:06:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 601 transitions. [2024-09-12 20:06:34,982 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 601 transitions. Word has length 82 [2024-09-12 20:06:34,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:34,982 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 601 transitions. [2024-09-12 20:06:34,982 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 9.6) internal successors, (144), 14 states have internal predecessors, (144), 7 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:06:34,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:34,983 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 601 transitions. [2024-09-12 20:06:34,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-09-12 20:06:34,983 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:34,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:34,998 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 20:06:35,187 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:35,187 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_27_to_35_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:35,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:35,188 INFO L85 PathProgramCache]: Analyzing trace with hash -273267960, now seen corresponding path program 1 times [2024-09-12 20:06:35,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:35,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869414665] [2024-09-12 20:06:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:35,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:35,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162391292] [2024-09-12 20:06:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:35,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:35,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:35,207 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 20:06:35,208 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 20:06:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:35,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 20:06:35,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:35,325 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 20:06:35,563 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 20:06:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:35,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:35,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:35,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869414665] [2024-09-12 20:06:35,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:35,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162391292] [2024-09-12 20:06:35,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162391292] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:06:35,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:06:35,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2024-09-12 20:06:35,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593430208] [2024-09-12 20:06:35,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:35,935 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 20:06:35,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 20:06:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-09-12 20:06:35,936 INFO L87 Difference]: Start difference. First operand 474 states and 601 transitions. Second operand has 22 states, 19 states have (on average 7.526315789473684) internal successors, (143), 17 states have internal predecessors, (143), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:43,071 INFO L93 Difference]: Finished difference Result 596 states and 608 transitions. [2024-09-12 20:06:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 20:06:43,071 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 7.526315789473684) internal successors, (143), 17 states have internal predecessors, (143), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 83 [2024-09-12 20:06:43,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:43,073 INFO L225 Difference]: With dead ends: 596 [2024-09-12 20:06:43,073 INFO L226 Difference]: Without dead ends: 594 [2024-09-12 20:06:43,074 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 20:06:43,074 INFO L434 NwaCegarLoop]: 180 mSDtfsCounter, 1012 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:43,074 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 2231 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-09-12 20:06:43,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-09-12 20:06:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 474. [2024-09-12 20:06:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 346 states have (on average 1.6271676300578035) internal successors, (563), 449 states have internal predecessors, (563), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:06:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 598 transitions. [2024-09-12 20:06:43,161 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 598 transitions. Word has length 83 [2024-09-12 20:06:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:43,162 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 598 transitions. [2024-09-12 20:06:43,162 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 7.526315789473684) internal successors, (143), 17 states have internal predecessors, (143), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:43,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 598 transitions. [2024-09-12 20:06:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-12 20:06:43,162 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:43,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:43,176 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 20:06:43,363 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 20:06:43,363 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_27_to_35_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:43,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:43,364 INFO L85 PathProgramCache]: Analyzing trace with hash -617499158, now seen corresponding path program 1 times [2024-09-12 20:06:43,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:43,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196109907] [2024-09-12 20:06:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:43,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:43,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406200284] [2024-09-12 20:06:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:43,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:43,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:43,383 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 20:06:43,384 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 20:06:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:43,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-09-12 20:06:43,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:43,499 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 20:06:43,516 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 20:06:43,520 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 20:06:43,825 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 20:06:43,858 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 20:06:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:43,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:44,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:44,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196109907] [2024-09-12 20:06:44,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:44,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406200284] [2024-09-12 20:06:44,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406200284] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:44,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:06:44,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-09-12 20:06:44,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363711977] [2024-09-12 20:06:44,390 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:44,390 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 20:06:44,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 20:06:44,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-09-12 20:06:44,391 INFO L87 Difference]: Start difference. First operand 474 states and 598 transitions. Second operand has 18 states, 16 states have (on average 4.75) internal successors, (76), 15 states have internal predecessors, (76), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:06:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:45,575 INFO L93 Difference]: Finished difference Result 539 states and 599 transitions. [2024-09-12 20:06:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 20:06:45,576 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.75) internal successors, (76), 15 states have internal predecessors, (76), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 85 [2024-09-12 20:06:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:45,578 INFO L225 Difference]: With dead ends: 539 [2024-09-12 20:06:45,578 INFO L226 Difference]: Without dead ends: 538 [2024-09-12 20:06:45,579 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 20:06:45,579 INFO L434 NwaCegarLoop]: 188 mSDtfsCounter, 968 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:45,580 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1546 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 20:06:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-09-12 20:06:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 474. [2024-09-12 20:06:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 346 states have (on average 1.6242774566473988) internal successors, (562), 449 states have internal predecessors, (562), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:06:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 597 transitions. [2024-09-12 20:06:45,655 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 597 transitions. Word has length 85 [2024-09-12 20:06:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:45,656 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 597 transitions. [2024-09-12 20:06:45,656 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.75) internal successors, (76), 15 states have internal predecessors, (76), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:06:45,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:45,656 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 597 transitions. [2024-09-12 20:06:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-12 20:06:45,657 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:45,658 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:45,672 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 20:06:45,861 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 20:06:45,861 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_27_to_35_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:45,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1962604543, now seen corresponding path program 1 times [2024-09-12 20:06:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:45,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887290213] [2024-09-12 20:06:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:45,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:45,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546494614] [2024-09-12 20:06:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:45,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:45,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:45,891 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 20:06:45,892 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 20:06:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:46,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 20:06:46,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:46,020 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 20:06:46,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:06:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:46,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:48,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887290213] [2024-09-12 20:06:48,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546494614] [2024-09-12 20:06:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546494614] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:48,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:06:48,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-12 20:06:48,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507179616] [2024-09-12 20:06:48,899 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:48,899 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 20:06:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 20:06:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-09-12 20:06:48,899 INFO L87 Difference]: Start difference. First operand 474 states and 597 transitions. Second operand has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:50,385 INFO L93 Difference]: Finished difference Result 538 states and 598 transitions. [2024-09-12 20:06:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 20:06:50,386 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 86 [2024-09-12 20:06:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:50,388 INFO L225 Difference]: With dead ends: 538 [2024-09-12 20:06:50,388 INFO L226 Difference]: Without dead ends: 537 [2024-09-12 20:06:50,388 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2024-09-12 20:06:50,389 INFO L434 NwaCegarLoop]: 184 mSDtfsCounter, 420 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:50,389 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1909 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 20:06:50,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-09-12 20:06:50,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 474. [2024-09-12 20:06:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 346 states have (on average 1.6213872832369942) internal successors, (561), 449 states have internal predecessors, (561), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:06:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 596 transitions. [2024-09-12 20:06:50,485 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 596 transitions. Word has length 86 [2024-09-12 20:06:50,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:50,486 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 596 transitions. [2024-09-12 20:06:50,486 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:50,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:50,486 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 596 transitions. [2024-09-12 20:06:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 20:06:50,486 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:50,487 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:50,500 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-12 20:06:50,687 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 20:06:50,687 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_27_to_35_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:50,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash -711198516, now seen corresponding path program 1 times [2024-09-12 20:06:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:50,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305375254] [2024-09-12 20:06:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:50,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:50,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003045051] [2024-09-12 20:06:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:50,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:50,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:50,716 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 20:06:50,717 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 20:06:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:50,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-12 20:06:50,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:50,851 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 20:06:50,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:06:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:51,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:51,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:51,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305375254] [2024-09-12 20:06:51,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:51,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003045051] [2024-09-12 20:06:51,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003045051] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:51,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:06:51,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-12 20:06:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726318793] [2024-09-12 20:06:51,744 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:51,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 20:06:51,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 20:06:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2024-09-12 20:06:51,745 INFO L87 Difference]: Start difference. First operand 474 states and 596 transitions. Second operand has 15 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:52,933 INFO L93 Difference]: Finished difference Result 537 states and 597 transitions. [2024-09-12 20:06:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 20:06:52,934 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 87 [2024-09-12 20:06:52,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:52,936 INFO L225 Difference]: With dead ends: 537 [2024-09-12 20:06:52,936 INFO L226 Difference]: Without dead ends: 536 [2024-09-12 20:06:52,936 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2024-09-12 20:06:52,936 INFO L434 NwaCegarLoop]: 197 mSDtfsCounter, 482 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:52,936 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1594 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 20:06:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-09-12 20:06:53,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 474. [2024-09-12 20:06:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 346 states have (on average 1.6184971098265897) internal successors, (560), 449 states have internal predecessors, (560), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:06:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 595 transitions. [2024-09-12 20:06:53,012 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 595 transitions. Word has length 87 [2024-09-12 20:06:53,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:53,012 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 595 transitions. [2024-09-12 20:06:53,012 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:53,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 595 transitions. [2024-09-12 20:06:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 20:06:53,013 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:53,013 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:53,026 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 20:06:53,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 20:06:53,218 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_27_to_35_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:06:53,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:53,218 INFO L85 PathProgramCache]: Analyzing trace with hash -572317341, now seen corresponding path program 1 times [2024-09-12 20:06:53,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:53,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506764412] [2024-09-12 20:06:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:53,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036856775] [2024-09-12 20:06:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:53,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:53,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:53,237 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 20:06:53,242 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 20:06:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:53,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 20:06:53,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:53,367 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 20:06:53,485 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 20:06:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:53,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:07:39,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:07:39,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506764412] [2024-09-12 20:07:39,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:07:39,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036856775] [2024-09-12 20:07:39,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036856775] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:07:39,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:07:39,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-12 20:07:39,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442722476] [2024-09-12 20:07:39,856 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:07:39,857 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 20:07:39,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:07:39,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 20:07:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=453, Unknown=11, NotChecked=0, Total=552 [2024-09-12 20:07:39,857 INFO L87 Difference]: Start difference. First operand 474 states and 595 transitions. Second operand has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:07:41,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:07:41,269 INFO L93 Difference]: Finished difference Result 536 states and 596 transitions. [2024-09-12 20:07:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 20:07:41,271 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 88 [2024-09-12 20:07:41,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:07:41,273 INFO L225 Difference]: With dead ends: 536 [2024-09-12 20:07:41,273 INFO L226 Difference]: Without dead ends: 535 [2024-09-12 20:07:41,274 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 46.2s TimeCoverageRelationStatistics Valid=179, Invalid=740, Unknown=11, NotChecked=0, Total=930 [2024-09-12 20:07:41,274 INFO L434 NwaCegarLoop]: 198 mSDtfsCounter, 420 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 20:07:41,274 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1564 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 20:07:41,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-09-12 20:07:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 474. [2024-09-12 20:07:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 346 states have (on average 1.615606936416185) internal successors, (559), 449 states have internal predecessors, (559), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:07:41,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 594 transitions. [2024-09-12 20:07:41,373 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 594 transitions. Word has length 88 [2024-09-12 20:07:41,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:07:41,374 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 594 transitions. [2024-09-12 20:07:41,374 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:07:41,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:07:41,374 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 594 transitions. [2024-09-12 20:07:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-09-12 20:07:41,374 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:07:41,374 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:07:41,387 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 20:07:41,577 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 20:07:41,577 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting func_to_recursive_line_27_to_35_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:07:41,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:07:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash -561968210, now seen corresponding path program 1 times [2024-09-12 20:07:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:07:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553120882] [2024-09-12 20:07:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:07:41,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:07:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:07:41,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693931132] [2024-09-12 20:07:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:07:41,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:07:41,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:07:41,607 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 20:07:41,608 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 20:07:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:07:41,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 20:07:41,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:07:41,751 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 20:07:41,875 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 20:07:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:07:41,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:07:54,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:07:54,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553120882] [2024-09-12 20:07:54,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:07:54,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693931132] [2024-09-12 20:07:54,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693931132] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:07:54,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:07:54,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-09-12 20:07:54,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493917039] [2024-09-12 20:07:54,285 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:07:54,285 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 20:07:54,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:07:54,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 20:07:54,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=500, Unknown=1, NotChecked=0, Total=600 [2024-09-12 20:07:54,286 INFO L87 Difference]: Start difference. First operand 474 states and 594 transitions. Second operand has 16 states, 14 states have (on average 5.714285714285714) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:07:55,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:07:55,649 INFO L93 Difference]: Finished difference Result 535 states and 595 transitions. [2024-09-12 20:07:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 20:07:55,649 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.714285714285714) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 89 [2024-09-12 20:07:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:07:55,655 INFO L225 Difference]: With dead ends: 535 [2024-09-12 20:07:55,655 INFO L226 Difference]: Without dead ends: 534 [2024-09-12 20:07:55,655 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=211, Invalid=844, Unknown=1, NotChecked=0, Total=1056 [2024-09-12 20:07:55,655 INFO L434 NwaCegarLoop]: 199 mSDtfsCounter, 462 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:07:55,655 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1819 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 20:07:55,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-09-12 20:07:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 474. [2024-09-12 20:07:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 346 states have (on average 1.6127167630057804) internal successors, (558), 449 states have internal predecessors, (558), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:07:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 593 transitions. [2024-09-12 20:07:55,759 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 593 transitions. Word has length 89 [2024-09-12 20:07:55,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:07:55,759 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 593 transitions. [2024-09-12 20:07:55,760 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.714285714285714) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:07:55,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:07:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 593 transitions. [2024-09-12 20:07:55,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-09-12 20:07:55,760 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:07:55,760 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:07:55,773 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-12 20:07:55,960 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 20:07:55,961 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:07:55,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:07:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash 176635486, now seen corresponding path program 1 times [2024-09-12 20:07:55,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:07:55,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974539668] [2024-09-12 20:07:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:07:55,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:07:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:07:55,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718772097] [2024-09-12 20:07:55,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:07:55,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:07:55,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:07:55,991 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 20:07:55,992 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 20:07:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:07:56,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 20:07:56,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:07:56,106 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 20:07:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:07:56,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:07:56,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:07:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974539668] [2024-09-12 20:07:56,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:07:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718772097] [2024-09-12 20:07:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718772097] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:07:56,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:07:56,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:07:56,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750877506] [2024-09-12 20:07:56,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:07:56,220 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:07:56,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:07:56,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:07:56,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:07:56,220 INFO L87 Difference]: Start difference. First operand 474 states and 593 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:07:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:07:56,997 INFO L93 Difference]: Finished difference Result 496 states and 593 transitions. [2024-09-12 20:07:56,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:07:56,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 89 [2024-09-12 20:07:56,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:07:56,999 INFO L225 Difference]: With dead ends: 496 [2024-09-12 20:07:56,999 INFO L226 Difference]: Without dead ends: 494 [2024-09-12 20:07:56,999 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:07:56,999 INFO L434 NwaCegarLoop]: 169 mSDtfsCounter, 169 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 20:07:57,000 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 595 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 20:07:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2024-09-12 20:07:57,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 474. [2024-09-12 20:07:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 346 states have (on average 1.606936416184971) internal successors, (556), 449 states have internal predecessors, (556), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:07:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 591 transitions. [2024-09-12 20:07:57,078 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 591 transitions. Word has length 89 [2024-09-12 20:07:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:07:57,078 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 591 transitions. [2024-09-12 20:07:57,078 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:07:57,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:07:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 591 transitions. [2024-09-12 20:07:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-12 20:07:57,079 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:07:57,079 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:07:57,092 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 20:07:57,280 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 20:07:57,280 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_27_to_35_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:07:57,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:07:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash -241145147, now seen corresponding path program 1 times [2024-09-12 20:07:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:07:57,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837046719] [2024-09-12 20:07:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:07:57,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:07:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:07:57,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004834113] [2024-09-12 20:07:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:07:57,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:07:57,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:07:57,307 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 20:07:57,308 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 20:07:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:07:57,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-12 20:07:57,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:07:57,448 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 20:07:57,577 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 20:07:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:07:57,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:09:06,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:09:06,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837046719] [2024-09-12 20:09:06,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:09:06,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004834113] [2024-09-12 20:09:06,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004834113] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:09:06,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:09:06,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-09-12 20:09:06,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335347904] [2024-09-12 20:09:06,726 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:09:06,726 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 20:09:06,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:09:06,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 20:09:06,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=531, Unknown=16, NotChecked=0, Total=650 [2024-09-12 20:09:06,727 INFO L87 Difference]: Start difference. First operand 474 states and 591 transitions. Second operand has 16 states, 14 states have (on average 5.785714285714286) internal successors, (81), 13 states have internal predecessors, (81), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:09:08,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:09:08,528 INFO L93 Difference]: Finished difference Result 532 states and 592 transitions. [2024-09-12 20:09:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 20:09:08,529 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.785714285714286) internal successors, (81), 13 states have internal predecessors, (81), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 90 [2024-09-12 20:09:08,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:09:08,530 INFO L225 Difference]: With dead ends: 532 [2024-09-12 20:09:08,530 INFO L226 Difference]: Without dead ends: 531 [2024-09-12 20:09:08,531 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 68.8s TimeCoverageRelationStatistics Valid=217, Invalid=889, Unknown=16, NotChecked=0, Total=1122 [2024-09-12 20:09:08,531 INFO L434 NwaCegarLoop]: 200 mSDtfsCounter, 408 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:09:08,531 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1486 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 20:09:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-09-12 20:09:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 474. [2024-09-12 20:09:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 346 states have (on average 1.6040462427745665) internal successors, (555), 449 states have internal predecessors, (555), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:09:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 590 transitions. [2024-09-12 20:09:08,621 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 590 transitions. Word has length 90 [2024-09-12 20:09:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:09:08,622 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 590 transitions. [2024-09-12 20:09:08,622 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.785714285714286) internal successors, (81), 13 states have internal predecessors, (81), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:09:08,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:08,622 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 590 transitions. [2024-09-12 20:09:08,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-12 20:09:08,622 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:09:08,623 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:08,635 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-12 20:09:08,826 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 20:09:08,826 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_27_to_35_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:09:08,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:08,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1114435216, now seen corresponding path program 1 times [2024-09-12 20:09:08,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:09:08,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194049108] [2024-09-12 20:09:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:08,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:09:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:09:08,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200119672] [2024-09-12 20:09:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:08,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:09:08,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:09:08,859 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:09:08,860 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 20:09:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:09:08,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-12 20:09:08,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:09:08,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:09:09,108 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 20:09:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:09:09,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:09:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:09:15,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194049108] [2024-09-12 20:09:15,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:09:15,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200119672] [2024-09-12 20:09:15,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200119672] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:09:15,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:09:15,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-12 20:09:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037257647] [2024-09-12 20:09:15,690 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:09:15,690 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 20:09:15,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:09:15,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 20:09:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2024-09-12 20:09:15,691 INFO L87 Difference]: Start difference. First operand 474 states and 590 transitions. Second operand has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:09:16,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:09:16,951 INFO L93 Difference]: Finished difference Result 531 states and 591 transitions. [2024-09-12 20:09:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 20:09:16,951 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 91 [2024-09-12 20:09:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:09:16,953 INFO L225 Difference]: With dead ends: 531 [2024-09-12 20:09:16,953 INFO L226 Difference]: Without dead ends: 530 [2024-09-12 20:09:16,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 20:09:16,954 INFO L434 NwaCegarLoop]: 201 mSDtfsCounter, 611 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:09:16,954 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1882 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 20:09:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-09-12 20:09:17,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 474. [2024-09-12 20:09:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 346 states have (on average 1.6011560693641618) internal successors, (554), 449 states have internal predecessors, (554), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:09:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 589 transitions. [2024-09-12 20:09:17,036 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 589 transitions. Word has length 91 [2024-09-12 20:09:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:09:17,037 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 589 transitions. [2024-09-12 20:09:17,037 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:09:17,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 589 transitions. [2024-09-12 20:09:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-12 20:09:17,037 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:09:17,038 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:09:17,052 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-12 20:09:17,241 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:09:17,241 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:09:17,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:17,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2051986912, now seen corresponding path program 1 times [2024-09-12 20:09:17,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:09:17,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110142505] [2024-09-12 20:09:17,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:17,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:09:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:09:17,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:09:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:09:17,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:09:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:09:17,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:09:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:09:17,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 20:09:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:09:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:09:17,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:09:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110142505] [2024-09-12 20:09:17,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110142505] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:09:17,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:09:17,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:09:17,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658377294] [2024-09-12 20:09:17,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:09:17,425 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:09:17,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:09:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:09:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:09:17,425 INFO L87 Difference]: Start difference. First operand 474 states and 589 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 20:09:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:09:19,872 INFO L93 Difference]: Finished difference Result 474 states and 589 transitions. [2024-09-12 20:09:19,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:09:19,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 91 [2024-09-12 20:09:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:09:19,874 INFO L225 Difference]: With dead ends: 474 [2024-09-12 20:09:19,874 INFO L226 Difference]: Without dead ends: 473 [2024-09-12 20:09:19,874 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:09:19,875 INFO L434 NwaCegarLoop]: 124 mSDtfsCounter, 193 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:09:19,875 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 478 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-09-12 20:09:19,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-09-12 20:09:19,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2024-09-12 20:09:19,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 346 states have (on average 1.5953757225433527) internal successors, (552), 448 states have internal predecessors, (552), 15 states have call successors, (15), 10 states have call predecessors, (15), 13 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-12 20:09:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 587 transitions. [2024-09-12 20:09:19,973 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 587 transitions. Word has length 91 [2024-09-12 20:09:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:09:19,973 INFO L474 AbstractCegarLoop]: Abstraction has 473 states and 587 transitions. [2024-09-12 20:09:19,973 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-12 20:09:19,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:19,974 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 587 transitions. [2024-09-12 20:09:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-12 20:09:19,974 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:09:19,974 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:19,974 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-09-12 20:09:19,974 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting func_to_recursive_line_27_to_35_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-09-12 20:09:19,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:19,974 INFO L85 PathProgramCache]: Analyzing trace with hash 187753511, now seen corresponding path program 1 times [2024-09-12 20:09:19,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:09:19,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608296943] [2024-09-12 20:09:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:19,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:09:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:09:19,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520090091] [2024-09-12 20:09:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:19,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:09:19,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:09:19,994 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:09:19,995 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 20:09:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:09:20,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 20:09:20,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:09:20,126 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 20:09:20,230 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 20:09:20,405 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 50 treesize of output 22 [2024-09-12 20:09:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:09:20,443 INFO L327 TraceCheckSpWp]: Computing backward predicates...