./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-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_egcd2-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 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 20:01:34,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 20:01:34,690 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 20:01:34,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 20:01:34,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 20:01:34,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 20:01:34,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 20:01:34,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 20:01:34,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 20:01:34,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 20:01:34,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 20:01:34,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 20:01:34,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 20:01:34,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 20:01:34,720 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 20:01:34,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 20:01:34,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 20:01:34,721 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 20:01:34,721 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 20:01:34,721 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 20:01:34,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 20:01:34,722 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 20:01:34,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 20:01:34,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 20:01:34,723 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 20:01:34,723 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 20:01:34,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 20:01:34,723 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 20:01:34,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 20:01:34,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 20:01:34,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 20:01:34,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 20:01:34,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:01:34,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 20:01:34,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 20:01:34,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 20:01:34,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 20:01:34,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 20:01:34,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 20:01:34,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 20:01:34,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 20:01:34,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 20:01:34,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 20:01:34,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 20:01:34,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 20:01:34,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 20:01:34,990 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 20:01:34,990 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 20:01:34,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-09-12 20:01:36,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 20:01:36,380 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 20:01:36,382 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-09-12 20:01:36,390 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/81014cde7/fe394e4fe69c41acb98981b3837af9c6/FLAGb810e7047 [2024-09-12 20:01:36,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/81014cde7/fe394e4fe69c41acb98981b3837af9c6 [2024-09-12 20:01:36,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 20:01:36,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 20:01:36,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 20:01:36,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 20:01:36,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 20:01:36,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c2ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36, skipping insertion in model container [2024-09-12 20:01:36,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,434 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 20:01:36,562 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_egcd2-ll.c[1037,1050] [2024-09-12 20:01:36,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:01:36,613 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 20:01:36,624 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_egcd2-ll.c[1037,1050] [2024-09-12 20:01:36,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:01:36,668 INFO L204 MainTranslator]: Completed translation [2024-09-12 20:01:36,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36 WrapperNode [2024-09-12 20:01:36,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 20:01:36,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 20:01:36,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 20:01:36,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 20:01:36,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,693 INFO L138 Inliner]: procedures = 17, calls = 141, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 20:01:36,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 20:01:36,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 20:01:36,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 20:01:36,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 20:01:36,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,707 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,724 INFO L175 MemorySlicer]: Split 86 memory accesses to 13 slices as follows [2, 3, 3, 8, 5, 8, 5, 12, 9, 7, 10, 7, 7]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 1, 1, 2, 2, 2, 2, 1, 1, 3, 2, 2, 3]. [2024-09-12 20:01:36,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 20:01:36,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 20:01:36,757 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 20:01:36,757 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 20:01:36,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (1/1) ... [2024-09-12 20:01:36,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:01:36,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:36,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 20:01:36,785 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 20:01:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 20:01:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 20:01:36,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 20:01:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 20:01:36,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 20:01:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 20:01:36,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 20:01:36,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-12 20:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_45_to_53_0 [2024-09-12 20:01:36,823 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_45_to_53_0 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 20:01:36,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_65_0 [2024-09-12 20:01:36,823 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_65_0 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 20:01:36,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 20:01:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 20:01:36,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 20:01:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 20:01:36,949 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 20:01:36,951 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 20:01:37,691 INFO L? ?]: Removed 216 outVars from TransFormulas that were not future-live. [2024-09-12 20:01:37,691 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 20:01:37,711 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 20:01:37,712 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 20:01:37,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:01:37 BoogieIcfgContainer [2024-09-12 20:01:37,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 20:01:37,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 20:01:37,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 20:01:37,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 20:01:37,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 08:01:36" (1/3) ... [2024-09-12 20:01:37,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a924be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:01:37, skipping insertion in model container [2024-09-12 20:01:37,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:36" (2/3) ... [2024-09-12 20:01:37,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a924be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:01:37, skipping insertion in model container [2024-09-12 20:01:37,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:01:37" (3/3) ... [2024-09-12 20:01:37,719 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd2-ll.c [2024-09-12 20:01:37,731 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 20:01:37,731 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2024-09-12 20:01:37,780 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 20:01:37,786 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;@682df7a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 20:01:37,786 INFO L337 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-09-12 20:01:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 94 states have (on average 1.7553191489361701) internal successors, (165), 161 states have internal predecessors, (165), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 20:01:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 20:01:37,796 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:37,796 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:37,797 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-09-12 20:01:37,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:37,802 INFO L85 PathProgramCache]: Analyzing trace with hash 273665622, now seen corresponding path program 1 times [2024-09-12 20:01:37,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:37,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822661815] [2024-09-12 20:01:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:37,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:38,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:01:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:38,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:01:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:38,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:01:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:01:38,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:38,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822661815] [2024-09-12 20:01:38,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822661815] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:38,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:38,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 20:01:38,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539134004] [2024-09-12 20:01:38,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:38,021 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 20:01:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:38,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 20:01:38,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 20:01:38,040 INFO L87 Difference]: Start difference. First operand has 182 states, 94 states have (on average 1.7553191489361701) internal successors, (165), 161 states have internal predecessors, (165), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:38,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:38,108 INFO L93 Difference]: Finished difference Result 358 states and 401 transitions. [2024-09-12 20:01:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 20:01:38,110 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2024-09-12 20:01:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:38,117 INFO L225 Difference]: With dead ends: 358 [2024-09-12 20:01:38,119 INFO L226 Difference]: Without dead ends: 178 [2024-09-12 20:01:38,124 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 20:01:38,129 INFO L434 NwaCegarLoop]: 191 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, 191 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:38,129 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:01:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-09-12 20:01:38,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-09-12 20:01:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 92 states have (on average 1.7282608695652173) internal successors, (159), 159 states have internal predecessors, (159), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 20:01:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 189 transitions. [2024-09-12 20:01:38,214 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 189 transitions. Word has length 18 [2024-09-12 20:01:38,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:38,214 INFO L474 AbstractCegarLoop]: Abstraction has 178 states and 189 transitions. [2024-09-12 20:01:38,216 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:38,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 189 transitions. [2024-09-12 20:01:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 20:01:38,218 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:38,218 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:38,218 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 20:01:38,218 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-09-12 20:01:38,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:38,219 INFO L85 PathProgramCache]: Analyzing trace with hash 976577242, now seen corresponding path program 1 times [2024-09-12 20:01:38,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:38,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97787133] [2024-09-12 20:01:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:38,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:38,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844610143] [2024-09-12 20:01:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:38,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:38,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:38,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:38,329 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 20:01:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:38,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 20:01:38,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:38,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:01:38,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:01:38,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-09-12 20:01:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:01:38,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:38,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97787133] [2024-09-12 20:01:38,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:38,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844610143] [2024-09-12 20:01:38,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844610143] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:38,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-09-12 20:01:38,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911853446] [2024-09-12 20:01:38,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:38,746 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 20:01:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:38,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 20:01:38,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:01:38,747 INFO L87 Difference]: Start difference. First operand 178 states and 189 transitions. Second operand has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:01:42,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:01:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:43,043 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2024-09-12 20:01:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:01:43,044 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 18 [2024-09-12 20:01:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:43,046 INFO L225 Difference]: With dead ends: 182 [2024-09-12 20:01:43,049 INFO L226 Difference]: Without dead ends: 181 [2024-09-12 20:01:43,050 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:01:43,050 INFO L434 NwaCegarLoop]: 172 mSDtfsCounter, 191 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:43,051 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1120 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 206 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-09-12 20:01:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-09-12 20:01:43,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-09-12 20:01:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 95 states have (on average 1.694736842105263) internal successors, (161), 161 states have internal predecessors, (161), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 20:01:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 191 transitions. [2024-09-12 20:01:43,074 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 191 transitions. Word has length 18 [2024-09-12 20:01:43,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:43,076 INFO L474 AbstractCegarLoop]: Abstraction has 181 states and 191 transitions. [2024-09-12 20:01:43,076 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:01:43,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 191 transitions. [2024-09-12 20:01:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 20:01:43,077 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:43,077 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:43,090 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 20:01:43,277 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:43,278 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-09-12 20:01:43,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:43,278 INFO L85 PathProgramCache]: Analyzing trace with hash 209123468, now seen corresponding path program 1 times [2024-09-12 20:01:43,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:43,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39985026] [2024-09-12 20:01:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:43,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:43,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206830718] [2024-09-12 20:01:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:43,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:43,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:43,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:43,323 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 20:01:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:43,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 20:01:43,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:43,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:01:43,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:01:43,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:01:43,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 52 [2024-09-12 20:01:43,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:01:43,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 55 [2024-09-12 20:01:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:01:43,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:43,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39985026] [2024-09-12 20:01:43,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:43,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206830718] [2024-09-12 20:01:43,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206830718] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:43,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:43,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-09-12 20:01:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179726548] [2024-09-12 20:01:43,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:43,858 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:01:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:43,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:01:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:01:43,859 INFO L87 Difference]: Start difference. First operand 181 states and 191 transitions. Second operand has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:01:47,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:01:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:48,376 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2024-09-12 20:01:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:01:48,376 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2024-09-12 20:01:48,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:48,378 INFO L225 Difference]: With dead ends: 181 [2024-09-12 20:01:48,378 INFO L226 Difference]: Without dead ends: 180 [2024-09-12 20:01:48,378 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-09-12 20:01:48,379 INFO L434 NwaCegarLoop]: 166 mSDtfsCounter, 190 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:48,379 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1145 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 291 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-09-12 20:01:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-09-12 20:01:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-09-12 20:01:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 160 states have internal predecessors, (160), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 20:01:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 190 transitions. [2024-09-12 20:01:48,417 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 190 transitions. Word has length 19 [2024-09-12 20:01:48,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:48,417 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 190 transitions. [2024-09-12 20:01:48,418 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:01:48,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:48,418 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 190 transitions. [2024-09-12 20:01:48,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 20:01:48,418 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:48,419 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:48,432 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 20:01:48,619 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:48,619 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-09-12 20:01:48,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2107107044, now seen corresponding path program 1 times [2024-09-12 20:01:48,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:48,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622877633] [2024-09-12 20:01:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:48,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:48,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135126744] [2024-09-12 20:01:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:48,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:48,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:48,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:48,674 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 20:01:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:48,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 20:01:48,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:48,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-09-12 20:01:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 20:01:48,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:48,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622877633] [2024-09-12 20:01:48,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135126744] [2024-09-12 20:01:48,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135126744] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:48,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:48,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:01:48,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405631470] [2024-09-12 20:01:48,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:48,808 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:01:48,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:48,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:01:48,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:01:48,809 INFO L87 Difference]: Start difference. First operand 180 states and 190 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:48,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:48,916 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2024-09-12 20:01:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:01:48,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-09-12 20:01:48,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:48,917 INFO L225 Difference]: With dead ends: 180 [2024-09-12 20:01:48,917 INFO L226 Difference]: Without dead ends: 179 [2024-09-12 20:01:48,918 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:01:48,918 INFO L434 NwaCegarLoop]: 173 mSDtfsCounter, 24 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:48,919 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 982 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:01:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-12 20:01:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-09-12 20:01:48,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 95 states have (on average 1.6736842105263159) internal successors, (159), 159 states have internal predecessors, (159), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 20:01:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 189 transitions. [2024-09-12 20:01:48,941 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 189 transitions. Word has length 20 [2024-09-12 20:01:48,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:48,941 INFO L474 AbstractCegarLoop]: Abstraction has 179 states and 189 transitions. [2024-09-12 20:01:48,941 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:48,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 189 transitions. [2024-09-12 20:01:48,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 20:01:48,941 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:48,942 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:48,954 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 20:01:49,145 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,146 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-09-12 20:01:49,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:49,146 INFO L85 PathProgramCache]: Analyzing trace with hash -895808882, now seen corresponding path program 1 times [2024-09-12 20:01:49,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:49,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702609177] [2024-09-12 20:01:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:49,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745144713] [2024-09-12 20:01:49,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:49,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:49,190 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 20:01:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:49,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 20:01:49,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:49,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:01:49,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:01:49,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2024-09-12 20:01:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 20:01:49,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:49,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:49,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702609177] [2024-09-12 20:01:49,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:49,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745144713] [2024-09-12 20:01:49,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745144713] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:49,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:49,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:01:49,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791157937] [2024-09-12 20:01:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:49,397 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:01:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:01:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:01:49,398 INFO L87 Difference]: Start difference. First operand 179 states and 189 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:01:49,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:49,632 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2024-09-12 20:01:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:01:49,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2024-09-12 20:01:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:49,634 INFO L225 Difference]: With dead ends: 179 [2024-09-12 20:01:49,634 INFO L226 Difference]: Without dead ends: 178 [2024-09-12 20:01:49,634 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:01:49,635 INFO L434 NwaCegarLoop]: 166 mSDtfsCounter, 186 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:49,635 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 877 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:01:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-09-12 20:01:49,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-09-12 20:01:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 95 states have (on average 1.6631578947368422) internal successors, (158), 158 states have internal predecessors, (158), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 20:01:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions. [2024-09-12 20:01:49,665 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 21 [2024-09-12 20:01:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:49,666 INFO L474 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions. [2024-09-12 20:01:49,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:01:49,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions. [2024-09-12 20:01:49,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 20:01:49,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:49,668 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:49,684 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 20:01:49,868 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,868 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_45_to_53_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-09-12 20:01:49,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash 678177926, now seen corresponding path program 1 times [2024-09-12 20:01:49,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:49,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819817697] [2024-09-12 20:01:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:49,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1503731186] [2024-09-12 20:01:49,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:49,921 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:49,922 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 20:01:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-12 20:01:50,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:50,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:01:50,119 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 20:01:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 20:01:50,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:50,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:50,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819817697] [2024-09-12 20:01:50,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:50,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503731186] [2024-09-12 20:01:50,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503731186] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:50,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:50,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:01:50,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193181956] [2024-09-12 20:01:50,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:50,150 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:01:50,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:50,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:01:50,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:01:50,151 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 20:01:50,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:50,392 INFO L93 Difference]: Finished difference Result 365 states and 389 transitions. [2024-09-12 20:01:50,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:01:50,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2024-09-12 20:01:50,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:50,396 INFO L225 Difference]: With dead ends: 365 [2024-09-12 20:01:50,396 INFO L226 Difference]: Without dead ends: 363 [2024-09-12 20:01:50,397 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:01:50,397 INFO L434 NwaCegarLoop]: 163 mSDtfsCounter, 290 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:50,398 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1124 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:01:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-09-12 20:01:50,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 268. [2024-09-12 20:01:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 173 states have (on average 1.69364161849711) internal successors, (293), 236 states have internal predecessors, (293), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (26), 22 states have call predecessors, (26), 20 states have call successors, (26) [2024-09-12 20:01:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 342 transitions. [2024-09-12 20:01:50,444 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 342 transitions. Word has length 41 [2024-09-12 20:01:50,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:50,444 INFO L474 AbstractCegarLoop]: Abstraction has 268 states and 342 transitions. [2024-09-12 20:01:50,444 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 20:01:50,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:50,444 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 342 transitions. [2024-09-12 20:01:50,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 20:01:50,445 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:50,445 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:50,458 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 20:01:50,649 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 20:01:50,650 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-09-12 20:01:50,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:50,650 INFO L85 PathProgramCache]: Analyzing trace with hash 676279856, now seen corresponding path program 1 times [2024-09-12 20:01:50,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:50,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288064956] [2024-09-12 20:01:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:50,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:01:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:01:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:01:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 20:01:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 20:01:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 20:01:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 20:01:51,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:51,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288064956] [2024-09-12 20:01:51,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288064956] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:01:51,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571659998] [2024-09-12 20:01:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:51,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:51,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:51,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:51,059 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 20:01:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:51,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-12 20:01:51,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:51,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:01:51,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:01:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 20:01:51,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:01:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 20:01:51,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571659998] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:01:51,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:01:51,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 25 [2024-09-12 20:01:51,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507265356] [2024-09-12 20:01:51,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:01:51,608 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 20:01:51,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:51,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 20:01:51,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-09-12 20:01:51,609 INFO L87 Difference]: Start difference. First operand 268 states and 342 transitions. Second operand has 25 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 20 states have internal predecessors, (45), 6 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-09-12 20:01:57,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:02:01,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:02:05,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:02:09,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:02:13,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:02:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:13,842 INFO L93 Difference]: Finished difference Result 469 states and 587 transitions. [2024-09-12 20:02:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 20:02:13,843 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 20 states have internal predecessors, (45), 6 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 41 [2024-09-12 20:02:13,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:13,845 INFO L225 Difference]: With dead ends: 469 [2024-09-12 20:02:13,845 INFO L226 Difference]: Without dead ends: 433 [2024-09-12 20:02:13,847 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 20:02:13,848 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 580 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 100 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:13,848 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 769 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1985 Invalid, 10 Unknown, 0 Unchecked, 21.7s Time] [2024-09-12 20:02:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-09-12 20:02:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 389. [2024-09-12 20:02:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 277 states have (on average 1.7148014440433212) internal successors, (475), 341 states have internal predecessors, (475), 33 states have call successors, (33), 16 states have call predecessors, (33), 18 states have return successors, (39), 31 states have call predecessors, (39), 30 states have call successors, (39) [2024-09-12 20:02:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 547 transitions. [2024-09-12 20:02:13,920 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 547 transitions. Word has length 41 [2024-09-12 20:02:13,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:13,920 INFO L474 AbstractCegarLoop]: Abstraction has 389 states and 547 transitions. [2024-09-12 20:02:13,920 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 20 states have internal predecessors, (45), 6 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-09-12 20:02:13,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 547 transitions. [2024-09-12 20:02:13,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 20:02:13,921 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:13,921 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:13,935 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 20:02:14,125 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:14,126 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_45_to_53_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-09-12 20:02:14,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:14,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1106039384, now seen corresponding path program 1 times [2024-09-12 20:02:14,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:14,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808097762] [2024-09-12 20:02:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:14,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat