./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-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_egcd3-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 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 --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 20:01:41,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 20:01:41,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 20:01:41,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 20:01:41,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 20:01:41,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 20:01:41,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 20:01:41,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 20:01:41,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 20:01:41,954 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 20:01:41,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 20:01:41,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 20:01:41,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 20:01:41,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 20:01:41,957 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 20:01:41,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 20:01:41,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 20:01:41,958 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 20:01:41,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 20:01:41,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 20:01:41,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 20:01:41,962 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 20:01:41,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 20:01:41,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 20:01:41,962 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 20:01:41,962 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 20:01:41,962 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 20:01:41,963 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 20:01:41,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 20:01:41,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 20:01:41,963 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 20:01:41,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 20:01:41,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:01:41,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 20:01:41,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 20:01:41,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 20:01:41,964 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 20:01:41,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 20:01:41,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 20:01:41,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 20:01:41,965 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 20:01:41,968 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 20:01:41,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 20:01:42,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 20:01:42,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 20:01:42,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 20:01:42,212 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 20:01:42,212 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 20:01:42,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-09-12 20:01:43,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 20:01:43,628 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 20:01:43,629 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-09-12 20:01:43,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9ee2aa5d6/c6943f49ce5742a5b84f670b41c5731c/FLAGf9a3055cb [2024-09-12 20:01:44,039 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9ee2aa5d6/c6943f49ce5742a5b84f670b41c5731c [2024-09-12 20:01:44,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 20:01:44,042 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 20:01:44,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 20:01:44,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 20:01:44,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 20:01:44,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38572db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44, skipping insertion in model container [2024-09-12 20:01:44,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 20:01:44,190 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_egcd3-ll.c[1052,1065] [2024-09-12 20:01:44,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:01:44,232 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 20:01:44,241 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_egcd3-ll.c[1052,1065] [2024-09-12 20:01:44,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:01:44,283 INFO L204 MainTranslator]: Completed translation [2024-09-12 20:01:44,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44 WrapperNode [2024-09-12 20:01:44,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 20:01:44,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 20:01:44,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 20:01:44,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 20:01:44,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,309 INFO L138 Inliner]: procedures = 18, calls = 127, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 20:01:44,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 20:01:44,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 20:01:44,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 20:01:44,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 20:01:44,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,357 INFO L175 MemorySlicer]: Split 77 memory accesses to 13 slices as follows [2, 6, 7, 5, 5, 6, 6, 7, 7, 6, 9, 5, 6]. 12 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, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2]. [2024-09-12 20:01:44,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 20:01:44,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 20:01:44,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 20:01:44,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 20:01:44,389 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (1/1) ... [2024-09-12 20:01:44,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:01:44,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:44,415 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 20:01:44,417 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 20:01:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 20:01:44,454 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 20:01:44,454 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 20:01:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 20:01:44,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 20:01:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 20:01:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 20:01:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 20:01:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-12 20:01:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-12 20:01:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-12 20:01:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-09-12 20:01:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-09-12 20:01:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-09-12 20:01:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-09-12 20:01:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-09-12 20:01:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-09-12 20:01:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-09-12 20:01:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-09-12 20:01:44,458 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-09-12 20:01:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-09-12 20:01:44,458 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-09-12 20:01:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 20:01:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-09-12 20:01:44,459 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-09-12 20:01:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 20:01:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 20:01:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 20:01:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-12 20:01:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-12 20:01:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-12 20:01:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-09-12 20:01:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-09-12 20:01:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-09-12 20:01:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-09-12 20:01:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-09-12 20:01:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-09-12 20:01:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-09-12 20:01:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 20:01:44,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 20:01:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 20:01:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 20:01:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 20:01:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 20:01:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 20:01:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-12 20:01:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-12 20:01:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-12 20:01:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-09-12 20:01:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-09-12 20:01:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-09-12 20:01:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-09-12 20:01:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-09-12 20:01:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-09-12 20:01:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-09-12 20:01:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 20:01:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 20:01:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 20:01:44,578 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 20:01:44,580 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 20:01:45,203 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-09-12 20:01:45,203 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 20:01:45,223 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 20:01:45,223 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-12 20:01:45,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:01:45 BoogieIcfgContainer [2024-09-12 20:01:45,225 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 20:01:45,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 20:01:45,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 20:01:45,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 20:01:45,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 08:01:44" (1/3) ... [2024-09-12 20:01:45,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62af36b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:01:45, skipping insertion in model container [2024-09-12 20:01:45,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:44" (2/3) ... [2024-09-12 20:01:45,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62af36b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:01:45, skipping insertion in model container [2024-09-12 20:01:45,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:01:45" (3/3) ... [2024-09-12 20:01:45,231 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3-ll.c [2024-09-12 20:01:45,243 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 20:01:45,243 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 51 error locations. [2024-09-12 20:01:45,289 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 20:01:45,301 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;@5c85c73a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 20:01:45,301 INFO L337 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-09-12 20:01:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 82 states have (on average 1.7195121951219512) internal successors, (141), 136 states have internal predecessors, (141), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 20:01:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 20:01:45,309 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:45,310 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:45,310 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:01:45,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1810907816, now seen corresponding path program 1 times [2024-09-12 20:01:45,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:45,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372262124] [2024-09-12 20:01:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:45,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:45,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:01:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:45,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:01:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:45,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:01:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:45,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 20:01:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:45,604 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 20:01:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:45,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372262124] [2024-09-12 20:01:45,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372262124] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:45,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:45,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 20:01:45,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148318570] [2024-09-12 20:01:45,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:45,611 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 20:01:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 20:01:45,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 20:01:45,631 INFO L87 Difference]: Start difference. First operand has 156 states, 82 states have (on average 1.7195121951219512) internal successors, (141), 136 states have internal predecessors, (141), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:01:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:46,194 INFO L93 Difference]: Finished difference Result 312 states and 357 transitions. [2024-09-12 20:01:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 20:01:46,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2024-09-12 20:01:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:46,208 INFO L225 Difference]: With dead ends: 312 [2024-09-12 20:01:46,210 INFO L226 Difference]: Without dead ends: 158 [2024-09-12 20:01:46,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 20:01:46,218 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 69 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:46,218 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 129 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:01:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-09-12 20:01:46,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2024-09-12 20:01:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 80 states have (on average 1.675) internal successors, (134), 134 states have internal predecessors, (134), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 20:01:46,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2024-09-12 20:01:46,272 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 24 [2024-09-12 20:01:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:46,273 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2024-09-12 20:01:46,274 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:01:46,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2024-09-12 20:01:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 20:01:46,276 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:46,276 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:46,276 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 20:01:46,277 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:01:46,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2123260074, now seen corresponding path program 1 times [2024-09-12 20:01:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:46,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031713408] [2024-09-12 20:01:46,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:46,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:46,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:01:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:46,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:01:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:46,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:01:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:46,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 20:01:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:46,727 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 20:01:46,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:46,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031713408] [2024-09-12 20:01:46,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031713408] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:46,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:46,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-09-12 20:01:46,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309282320] [2024-09-12 20:01:46,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:46,729 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:01:46,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:46,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:01:46,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:01:46,732 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:01:47,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:47,809 INFO L93 Difference]: Finished difference Result 194 states and 206 transitions. [2024-09-12 20:01:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:01:47,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2024-09-12 20:01:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:47,811 INFO L225 Difference]: With dead ends: 194 [2024-09-12 20:01:47,811 INFO L226 Difference]: Without dead ends: 158 [2024-09-12 20:01:47,812 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:01:47,813 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 94 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:47,813 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 601 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 20:01:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-09-12 20:01:47,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2024-09-12 20:01:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 81 states have (on average 1.6666666666666667) internal successors, (135), 135 states have internal predecessors, (135), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-09-12 20:01:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2024-09-12 20:01:47,830 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 25 [2024-09-12 20:01:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:47,830 INFO L474 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2024-09-12 20:01:47,830 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:01:47,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2024-09-12 20:01:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 20:01:47,831 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:47,831 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:47,832 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 20:01:47,832 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:01:47,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:47,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1949024035, now seen corresponding path program 1 times [2024-09-12 20:01:47,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:47,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249738064] [2024-09-12 20:01:47,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:47,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:47,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133568556] [2024-09-12 20:01:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:47,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:47,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:47,881 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 20:01:47,883 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 20:01:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:48,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-12 20:01:48,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:48,070 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 20:01:48,109 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 20:01:48,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:01:48,187 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 20:01:48,312 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 20:01:48,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:01:48,330 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 20:01:48,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:48,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:48,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249738064] [2024-09-12 20:01:48,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:48,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133568556] [2024-09-12 20:01:48,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133568556] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:48,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:48,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-09-12 20:01:48,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076207802] [2024-09-12 20:01:48,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:48,334 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 20:01:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 20:01:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-09-12 20:01:48,334 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:48,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:48,812 INFO L93 Difference]: Finished difference Result 247 states and 265 transitions. [2024-09-12 20:01:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 20:01:48,813 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-09-12 20:01:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:48,815 INFO L225 Difference]: With dead ends: 247 [2024-09-12 20:01:48,816 INFO L226 Difference]: Without dead ends: 244 [2024-09-12 20:01:48,816 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-09-12 20:01:48,817 INFO L434 NwaCegarLoop]: 135 mSDtfsCounter, 177 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:48,818 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1605 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:01:48,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-09-12 20:01:48,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 208. [2024-09-12 20:01:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 125 states have (on average 1.664) internal successors, (208), 181 states have internal predecessors, (208), 23 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2024-09-12 20:01:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 253 transitions. [2024-09-12 20:01:48,856 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 253 transitions. Word has length 29 [2024-09-12 20:01:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:48,856 INFO L474 AbstractCegarLoop]: Abstraction has 208 states and 253 transitions. [2024-09-12 20:01:48,856 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:48,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:48,857 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 253 transitions. [2024-09-12 20:01:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 20:01:48,858 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:48,858 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:48,873 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 20:01:49,058 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,059 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_33_to_70_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:01:49,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1947428292, now seen corresponding path program 1 times [2024-09-12 20:01:49,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:49,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132842143] [2024-09-12 20:01:49,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:49,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528212663] [2024-09-12 20:01:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:49,095 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 20:01:49,096 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 20:01:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:49,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 20:01:49,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:49,232 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 20:01:49,290 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 20:01:49,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:49,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:49,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132842143] [2024-09-12 20:01:49,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:49,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528212663] [2024-09-12 20:01:49,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528212663] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:49,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:49,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:01:49,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105711306] [2024-09-12 20:01:49,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:49,292 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:01:49,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:01:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:01:49,293 INFO L87 Difference]: Start difference. First operand 208 states and 253 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:01:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:49,453 INFO L93 Difference]: Finished difference Result 250 states and 267 transitions. [2024-09-12 20:01:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:01:49,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-09-12 20:01:49,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:49,455 INFO L225 Difference]: With dead ends: 250 [2024-09-12 20:01:49,455 INFO L226 Difference]: Without dead ends: 248 [2024-09-12 20:01:49,455 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:01:49,455 INFO L434 NwaCegarLoop]: 151 mSDtfsCounter, 103 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:49,456 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 863 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:01:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-12 20:01:49,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 215. [2024-09-12 20:01:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 131 states have (on average 1.6412213740458015) internal successors, (215), 186 states have internal predecessors, (215), 23 states have call successors, (23), 11 states have call predecessors, (23), 10 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-09-12 20:01:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 260 transitions. [2024-09-12 20:01:49,493 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 260 transitions. Word has length 29 [2024-09-12 20:01:49,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:49,493 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 260 transitions. [2024-09-12 20:01:49,493 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:01:49,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 260 transitions. [2024-09-12 20:01:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 20:01:49,494 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:49,495 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:49,509 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 20:01:49,698 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,699 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:01:49,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:49,699 INFO L85 PathProgramCache]: Analyzing trace with hash 290203016, now seen corresponding path program 1 times [2024-09-12 20:01:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:49,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29210670] [2024-09-12 20:01:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:49,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624882575] [2024-09-12 20:01:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:49,729 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 20:01:49,730 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 20:01:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:49,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-12 20:01:49,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:49,905 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 20:01:49,942 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 20:01:50,057 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 20:01:50,063 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 20:01:50,082 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 20:01:50,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:50,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:50,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29210670] [2024-09-12 20:01:50,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:50,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624882575] [2024-09-12 20:01:50,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624882575] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:50,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:50,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-09-12 20:01:50,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654337653] [2024-09-12 20:01:50,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:50,083 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 20:01:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:50,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 20:01:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:01:50,084 INFO L87 Difference]: Start difference. First operand 215 states and 260 transitions. Second operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:50,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:50,482 INFO L93 Difference]: Finished difference Result 246 states and 264 transitions. [2024-09-12 20:01:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 20:01:50,483 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-09-12 20:01:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:50,484 INFO L225 Difference]: With dead ends: 246 [2024-09-12 20:01:50,484 INFO L226 Difference]: Without dead ends: 245 [2024-09-12 20:01:50,485 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:01:50,485 INFO L434 NwaCegarLoop]: 139 mSDtfsCounter, 176 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:50,485 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1646 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:01:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-09-12 20:01:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 215. [2024-09-12 20:01:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 131 states have (on average 1.633587786259542) internal successors, (214), 186 states have internal predecessors, (214), 23 states have call successors, (23), 11 states have call predecessors, (23), 10 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-09-12 20:01:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 259 transitions. [2024-09-12 20:01:50,507 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 259 transitions. Word has length 30 [2024-09-12 20:01:50,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:50,507 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 259 transitions. [2024-09-12 20:01:50,508 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:50,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:50,508 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 259 transitions. [2024-09-12 20:01:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 20:01:50,508 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:50,509 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:50,523 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 20:01:50,712 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:50,713 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_47_to_56_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:01:50,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:50,713 INFO L85 PathProgramCache]: Analyzing trace with hash 406358981, now seen corresponding path program 1 times [2024-09-12 20:01:50,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:50,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545662752] [2024-09-12 20:01:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:50,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:50,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064609186] [2024-09-12 20:01:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:50,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:50,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:50,753 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 20:01:50,754 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 20:01:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-12 20:01:50,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:50,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:01:50,951 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 20:01:51,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:01:51,063 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 20:01:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:01:51,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:01:51,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545662752] [2024-09-12 20:01:51,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064609186] [2024-09-12 20:01:51,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064609186] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:01:51,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:01:51,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-12 20:01:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761645329] [2024-09-12 20:01:51,534 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:01:51,535 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 20:01:51,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 20:01:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-09-12 20:01:51,536 INFO L87 Difference]: Start difference. First operand 215 states and 259 transitions. Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:01:55,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:01:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:56,084 INFO L93 Difference]: Finished difference Result 245 states and 262 transitions. [2024-09-12 20:01:56,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 20:01:56,084 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2024-09-12 20:01:56,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:56,086 INFO L225 Difference]: With dead ends: 245 [2024-09-12 20:01:56,086 INFO L226 Difference]: Without dead ends: 244 [2024-09-12 20:01:56,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2024-09-12 20:01:56,087 INFO L434 NwaCegarLoop]: 135 mSDtfsCounter, 355 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:56,087 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1583 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 495 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-09-12 20:01:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-09-12 20:01:56,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 219. [2024-09-12 20:01:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 134 states have (on average 1.6119402985074627) internal successors, (216), 189 states have internal predecessors, (216), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-09-12 20:01:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 261 transitions. [2024-09-12 20:01:56,119 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 261 transitions. Word has length 31 [2024-09-12 20:01:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:56,119 INFO L474 AbstractCegarLoop]: Abstraction has 219 states and 261 transitions. [2024-09-12 20:01:56,119 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:01:56,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 261 transitions. [2024-09-12 20:01:56,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 20:01:56,120 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:56,120 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:56,134 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 20:01:56,320 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:56,321 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_33_to_70_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:01:56,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:56,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1127147642, now seen corresponding path program 1 times [2024-09-12 20:01:56,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:56,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473231689] [2024-09-12 20:01:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:56,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:56,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:01:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:56,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:01:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:56,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:01:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:56,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 20:01:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:56,584 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 20:01:56,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:56,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473231689] [2024-09-12 20:01:56,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473231689] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:56,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:56,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:01:56,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212388801] [2024-09-12 20:01:56,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:56,589 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:01:56,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:56,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:01:56,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:01:56,590 INFO L87 Difference]: Start difference. First operand 219 states and 261 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:01:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:57,192 INFO L93 Difference]: Finished difference Result 230 states and 277 transitions. [2024-09-12 20:01:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:01:57,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-09-12 20:01:57,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:57,194 INFO L225 Difference]: With dead ends: 230 [2024-09-12 20:01:57,196 INFO L226 Difference]: Without dead ends: 229 [2024-09-12 20:01:57,196 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:01:57,196 INFO L434 NwaCegarLoop]: 83 mSDtfsCounter, 76 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:57,197 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 427 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:01:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-09-12 20:01:57,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 220. [2024-09-12 20:01:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 135 states have (on average 1.6074074074074074) internal successors, (217), 190 states have internal predecessors, (217), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-09-12 20:01:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 262 transitions. [2024-09-12 20:01:57,231 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 262 transitions. Word has length 31 [2024-09-12 20:01:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:57,232 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 262 transitions. [2024-09-12 20:01:57,232 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:01:57,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 262 transitions. [2024-09-12 20:01:57,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 20:01:57,232 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:57,233 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:57,233 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-12 20:01:57,233 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_47_to_56_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:01:57,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:57,233 INFO L85 PathProgramCache]: Analyzing trace with hash -287773398, now seen corresponding path program 1 times [2024-09-12 20:01:57,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:57,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738803016] [2024-09-12 20:01:57,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:57,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:57,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050917789] [2024-09-12 20:01:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:57,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:57,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:57,273 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 20:01:57,274 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 20:01:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:57,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-12 20:01:57,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:57,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:01:57,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:01:57,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:01:57,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-09-12 20:01:57,715 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 20:01:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:01:57,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:01:58,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:58,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738803016] [2024-09-12 20:01:58,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:58,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050917789] [2024-09-12 20:01:58,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050917789] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:01:58,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:01:58,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-09-12 20:01:58,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398096135] [2024-09-12 20:01:58,884 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:01:58,884 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 20:01:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 20:01:58,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-09-12 20:01:58,885 INFO L87 Difference]: Start difference. First operand 220 states and 262 transitions. Second operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:02:02,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:02:03,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:03,754 INFO L93 Difference]: Finished difference Result 245 states and 262 transitions. [2024-09-12 20:02:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 20:02:03,755 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-09-12 20:02:03,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:03,756 INFO L225 Difference]: With dead ends: 245 [2024-09-12 20:02:03,756 INFO L226 Difference]: Without dead ends: 244 [2024-09-12 20:02:03,757 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=130, Invalid=862, Unknown=0, NotChecked=0, Total=992 [2024-09-12 20:02:03,757 INFO L434 NwaCegarLoop]: 136 mSDtfsCounter, 436 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:03,757 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1453 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-09-12 20:02:03,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-09-12 20:02:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 220. [2024-09-12 20:02:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 135 states have (on average 1.6) internal successors, (216), 190 states have internal predecessors, (216), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-09-12 20:02:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 261 transitions. [2024-09-12 20:02:03,802 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 261 transitions. Word has length 32 [2024-09-12 20:02:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:03,802 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 261 transitions. [2024-09-12 20:02:03,802 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:02:03,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:03,803 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 261 transitions. [2024-09-12 20:02:03,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 20:02:03,803 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:03,803 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:03,817 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:04,004 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 20:02:04,004 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_33_to_70_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:04,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:04,004 INFO L85 PathProgramCache]: Analyzing trace with hash -581838380, now seen corresponding path program 1 times [2024-09-12 20:02:04,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:04,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503689214] [2024-09-12 20:02:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:04,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:04,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668328893] [2024-09-12 20:02:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:04,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:04,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:04,034 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 20:02:04,035 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 20:02:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:04,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 20:02:04,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:04,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:04,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:04,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:04,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503689214] [2024-09-12 20:02:04,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668328893] [2024-09-12 20:02:04,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668328893] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:04,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:04,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:02:04,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376040484] [2024-09-12 20:02:04,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:04,237 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:02:04,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:04,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:02:04,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:02:04,238 INFO L87 Difference]: Start difference. First operand 220 states and 261 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:04,378 INFO L93 Difference]: Finished difference Result 248 states and 264 transitions. [2024-09-12 20:02:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:02:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-09-12 20:02:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:04,380 INFO L225 Difference]: With dead ends: 248 [2024-09-12 20:02:04,380 INFO L226 Difference]: Without dead ends: 247 [2024-09-12 20:02:04,380 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:04,381 INFO L434 NwaCegarLoop]: 152 mSDtfsCounter, 85 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:04,381 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 722 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-12 20:02:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 221. [2024-09-12 20:02:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 136 states have (on average 1.5955882352941178) internal successors, (217), 191 states have internal predecessors, (217), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-09-12 20:02:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 262 transitions. [2024-09-12 20:02:04,420 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 262 transitions. Word has length 32 [2024-09-12 20:02:04,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:04,420 INFO L474 AbstractCegarLoop]: Abstraction has 221 states and 262 transitions. [2024-09-12 20:02:04,420 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:04,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:04,421 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 262 transitions. [2024-09-12 20:02:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 20:02:04,421 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:04,421 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:04,435 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 20:02:04,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:04,626 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_47_to_56_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:04,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:04,626 INFO L85 PathProgramCache]: Analyzing trace with hash -331040665, now seen corresponding path program 1 times [2024-09-12 20:02:04,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:04,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308956902] [2024-09-12 20:02:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:04,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:04,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122693747] [2024-09-12 20:02:04,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:04,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:04,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:04,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:04,665 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 20:02:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:04,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-12 20:02:04,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:04,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:04,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:04,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:04,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-09-12 20:02:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:05,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:05,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308956902] [2024-09-12 20:02:05,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122693747] [2024-09-12 20:02:05,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122693747] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:05,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:05,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-09-12 20:02:05,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264434221] [2024-09-12 20:02:05,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:05,008 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:02:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:05,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:02:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:05,009 INFO L87 Difference]: Start difference. First operand 221 states and 262 transitions. Second operand has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:02:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:05,458 INFO L93 Difference]: Finished difference Result 245 states and 262 transitions. [2024-09-12 20:02:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:02:05,458 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-09-12 20:02:05,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:05,461 INFO L225 Difference]: With dead ends: 245 [2024-09-12 20:02:05,461 INFO L226 Difference]: Without dead ends: 244 [2024-09-12 20:02:05,461 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:02:05,461 INFO L434 NwaCegarLoop]: 134 mSDtfsCounter, 285 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:05,461 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1329 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-09-12 20:02:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 221. [2024-09-12 20:02:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 136 states have (on average 1.588235294117647) internal successors, (216), 191 states have internal predecessors, (216), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-09-12 20:02:05,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 261 transitions. [2024-09-12 20:02:05,512 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 261 transitions. Word has length 33 [2024-09-12 20:02:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:05,512 INFO L474 AbstractCegarLoop]: Abstraction has 221 states and 261 transitions. [2024-09-12 20:02:05,512 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:02:05,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:05,513 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 261 transitions. [2024-09-12 20:02:05,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 20:02:05,513 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:05,513 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:05,527 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 20:02:05,714 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:05,714 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_33_to_70_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:05,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:05,714 INFO L85 PathProgramCache]: Analyzing trace with hash -857120440, now seen corresponding path program 1 times [2024-09-12 20:02:05,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:05,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553057076] [2024-09-12 20:02:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:05,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:05,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402398606] [2024-09-12 20:02:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:05,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:05,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:05,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:05,748 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 20:02:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:05,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 20:02:05,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:05,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:05,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:05,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553057076] [2024-09-12 20:02:05,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402398606] [2024-09-12 20:02:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402398606] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:05,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:05,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:02:05,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195126745] [2024-09-12 20:02:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:05,940 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:02:05,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:05,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:02:05,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:05,941 INFO L87 Difference]: Start difference. First operand 221 states and 261 transitions. Second operand has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:06,720 INFO L93 Difference]: Finished difference Result 317 states and 366 transitions. [2024-09-12 20:02:06,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:02:06,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-09-12 20:02:06,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:06,722 INFO L225 Difference]: With dead ends: 317 [2024-09-12 20:02:06,722 INFO L226 Difference]: Without dead ends: 316 [2024-09-12 20:02:06,722 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:06,723 INFO L434 NwaCegarLoop]: 80 mSDtfsCounter, 121 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:06,723 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 537 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 20:02:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-09-12 20:02:06,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 232. [2024-09-12 20:02:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 146 states have (on average 1.5547945205479452) internal successors, (227), 200 states have internal predecessors, (227), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2024-09-12 20:02:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 273 transitions. [2024-09-12 20:02:06,785 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 273 transitions. Word has length 33 [2024-09-12 20:02:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:06,785 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 273 transitions. [2024-09-12 20:02:06,785 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:06,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 273 transitions. [2024-09-12 20:02:06,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 20:02:06,786 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:06,786 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:06,799 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 20:02:06,986 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:06,987 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_47_to_56_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:06,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:06,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1672325940, now seen corresponding path program 1 times [2024-09-12 20:02:06,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:06,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678601107] [2024-09-12 20:02:06,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:06,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899578692] [2024-09-12 20:02:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:07,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:07,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:07,023 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:07,025 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 20:02:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:07,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 20:02:07,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:07,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:07,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:07,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:07,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:02:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:07,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:07,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:07,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678601107] [2024-09-12 20:02:07,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:07,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899578692] [2024-09-12 20:02:07,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899578692] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:07,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-09-12 20:02:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109390720] [2024-09-12 20:02:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:07,358 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:02:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:02:07,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:07,359 INFO L87 Difference]: Start difference. First operand 232 states and 273 transitions. Second operand has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:02:07,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:07,806 INFO L93 Difference]: Finished difference Result 255 states and 273 transitions. [2024-09-12 20:02:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:02:07,807 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-09-12 20:02:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:07,808 INFO L225 Difference]: With dead ends: 255 [2024-09-12 20:02:07,808 INFO L226 Difference]: Without dead ends: 254 [2024-09-12 20:02:07,808 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:02:07,809 INFO L434 NwaCegarLoop]: 135 mSDtfsCounter, 334 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:07,809 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1324 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:07,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-09-12 20:02:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 232. [2024-09-12 20:02:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 146 states have (on average 1.547945205479452) internal successors, (226), 200 states have internal predecessors, (226), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2024-09-12 20:02:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 272 transitions. [2024-09-12 20:02:07,864 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 272 transitions. Word has length 34 [2024-09-12 20:02:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:07,865 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 272 transitions. [2024-09-12 20:02:07,865 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:02:07,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 272 transitions. [2024-09-12 20:02:07,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 20:02:07,865 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:07,866 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:07,879 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 20:02:08,066 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 20:02:08,066 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_33_to_70_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:08,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash -800929706, now seen corresponding path program 1 times [2024-09-12 20:02:08,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:08,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016427672] [2024-09-12 20:02:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:08,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:08,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550332780] [2024-09-12 20:02:08,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:08,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:08,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:08,091 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:08,092 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 20:02:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:08,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 20:02:08,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:08,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:08,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:08,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:08,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016427672] [2024-09-12 20:02:08,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:08,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550332780] [2024-09-12 20:02:08,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550332780] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:08,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:08,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 20:02:08,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182624077] [2024-09-12 20:02:08,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:08,247 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 20:02:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 20:02:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 20:02:08,248 INFO L87 Difference]: Start difference. First operand 232 states and 272 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:08,651 INFO L93 Difference]: Finished difference Result 251 states and 294 transitions. [2024-09-12 20:02:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 20:02:08,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-09-12 20:02:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:08,653 INFO L225 Difference]: With dead ends: 251 [2024-09-12 20:02:08,653 INFO L226 Difference]: Without dead ends: 249 [2024-09-12 20:02:08,654 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 20:02:08,654 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 93 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:08,654 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 242 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-09-12 20:02:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 242. [2024-09-12 20:02:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 154 states have (on average 1.5454545454545454) internal successors, (238), 207 states have internal predecessors, (238), 23 states have call successors, (23), 13 states have call predecessors, (23), 14 states have return successors, (26), 23 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 20:02:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 287 transitions. [2024-09-12 20:02:08,714 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 287 transitions. Word has length 34 [2024-09-12 20:02:08,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:08,714 INFO L474 AbstractCegarLoop]: Abstraction has 242 states and 287 transitions. [2024-09-12 20:02:08,715 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:08,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:08,715 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 287 transitions. [2024-09-12 20:02:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 20:02:08,715 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:08,715 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:08,728 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 20:02:08,916 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 20:02:08,916 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_33_to_70_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:08,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:08,917 INFO L85 PathProgramCache]: Analyzing trace with hash 940983050, now seen corresponding path program 1 times [2024-09-12 20:02:08,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:08,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266381861] [2024-09-12 20:02:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:08,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:09,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:09,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:09,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:09,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 20:02:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:09,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:09,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266381861] [2024-09-12 20:02:09,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266381861] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:09,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:09,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:02:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376595892] [2024-09-12 20:02:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:09,162 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:02:09,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:09,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:02:09,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:09,162 INFO L87 Difference]: Start difference. First operand 242 states and 287 transitions. Second operand has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:09,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:09,770 INFO L93 Difference]: Finished difference Result 255 states and 303 transitions. [2024-09-12 20:02:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:02:09,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-09-12 20:02:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:09,772 INFO L225 Difference]: With dead ends: 255 [2024-09-12 20:02:09,772 INFO L226 Difference]: Without dead ends: 254 [2024-09-12 20:02:09,772 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:02:09,773 INFO L434 NwaCegarLoop]: 83 mSDtfsCounter, 82 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:09,773 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 427 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:02:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-09-12 20:02:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 247. [2024-09-12 20:02:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 159 states have (on average 1.5408805031446542) internal successors, (245), 212 states have internal predecessors, (245), 23 states have call successors, (23), 13 states have call predecessors, (23), 14 states have return successors, (26), 23 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 20:02:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 294 transitions. [2024-09-12 20:02:09,831 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 294 transitions. Word has length 35 [2024-09-12 20:02:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:09,832 INFO L474 AbstractCegarLoop]: Abstraction has 247 states and 294 transitions. [2024-09-12 20:02:09,832 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:09,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:09,832 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 294 transitions. [2024-09-12 20:02:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-12 20:02:09,832 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:09,832 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:09,833 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-12 20:02:09,833 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_33_to_70_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:09,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash -894296360, now seen corresponding path program 1 times [2024-09-12 20:02:09,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:09,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612833001] [2024-09-12 20:02:09,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:09,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657288800] [2024-09-12 20:02:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:09,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:09,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:09,860 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:09,861 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 20:02:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:10,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 20:02:10,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:10,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:10,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:10,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:10,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:10,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:10,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612833001] [2024-09-12 20:02:10,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:10,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657288800] [2024-09-12 20:02:10,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657288800] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:10,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:10,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:02:10,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361670298] [2024-09-12 20:02:10,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:10,151 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:02:10,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:02:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:10,151 INFO L87 Difference]: Start difference. First operand 247 states and 294 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:10,818 INFO L93 Difference]: Finished difference Result 322 states and 374 transitions. [2024-09-12 20:02:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:02:10,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-09-12 20:02:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:10,820 INFO L225 Difference]: With dead ends: 322 [2024-09-12 20:02:10,820 INFO L226 Difference]: Without dead ends: 321 [2024-09-12 20:02:10,820 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:02:10,821 INFO L434 NwaCegarLoop]: 83 mSDtfsCounter, 87 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:10,821 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 460 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:02:10,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-09-12 20:02:10,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 249. [2024-09-12 20:02:10,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 161 states have (on average 1.5341614906832297) internal successors, (247), 214 states have internal predecessors, (247), 23 states have call successors, (23), 13 states have call predecessors, (23), 14 states have return successors, (26), 23 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 20:02:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 296 transitions. [2024-09-12 20:02:10,885 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 296 transitions. Word has length 36 [2024-09-12 20:02:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:10,885 INFO L474 AbstractCegarLoop]: Abstraction has 249 states and 296 transitions. [2024-09-12 20:02:10,885 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:10,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 296 transitions. [2024-09-12 20:02:10,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 20:02:10,885 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:10,885 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:10,898 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:11,086 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 20:02:11,086 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:11,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash -827655784, now seen corresponding path program 1 times [2024-09-12 20:02:11,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:11,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55438503] [2024-09-12 20:02:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:11,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:11,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373967701] [2024-09-12 20:02:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:11,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:11,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:11,116 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:11,117 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 20:02:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:11,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 155 conjuncts are in the unsatisfiable core [2024-09-12 20:02:11,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:11,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:11,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:11,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:02:11,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:11,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:11,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:02:11,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-12 20:02:11,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:02:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:11,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:11,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:11,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55438503] [2024-09-12 20:02:11,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:11,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373967701] [2024-09-12 20:02:11,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373967701] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:11,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:11,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-09-12 20:02:11,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647429129] [2024-09-12 20:02:11,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:11,517 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:02:11,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:11,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:02:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:11,518 INFO L87 Difference]: Start difference. First operand 249 states and 296 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:02:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:11,970 INFO L93 Difference]: Finished difference Result 277 states and 301 transitions. [2024-09-12 20:02:11,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:02:11,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-09-12 20:02:11,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:11,971 INFO L225 Difference]: With dead ends: 277 [2024-09-12 20:02:11,971 INFO L226 Difference]: Without dead ends: 275 [2024-09-12 20:02:11,972 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:02:11,972 INFO L434 NwaCegarLoop]: 140 mSDtfsCounter, 137 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:11,972 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1531 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-12 20:02:12,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 253. [2024-09-12 20:02:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 164 states have (on average 1.524390243902439) internal successors, (250), 217 states have internal predecessors, (250), 23 states have call successors, (23), 14 states have call predecessors, (23), 15 states have return successors, (26), 23 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 20:02:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 299 transitions. [2024-09-12 20:02:12,042 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 299 transitions. Word has length 38 [2024-09-12 20:02:12,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:12,042 INFO L474 AbstractCegarLoop]: Abstraction has 253 states and 299 transitions. [2024-09-12 20:02:12,042 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 20:02:12,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 299 transitions. [2024-09-12 20:02:12,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 20:02:12,043 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:12,043 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:12,056 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 20:02:12,246 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 20:02:12,246 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_47_to_56_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:12,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash 718739947, now seen corresponding path program 1 times [2024-09-12 20:02:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303307751] [2024-09-12 20:02:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:12,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387381421] [2024-09-12 20:02:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:12,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:12,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:12,271 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:12,272 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 20:02:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:12,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-12 20:02:12,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:12,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:12,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:12,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:02:12,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:02:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:02:12,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:12,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:12,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303307751] [2024-09-12 20:02:12,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:12,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387381421] [2024-09-12 20:02:12,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387381421] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:12,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:12,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-09-12 20:02:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971244194] [2024-09-12 20:02:12,676 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:12,676 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 20:02:12,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 20:02:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:02:12,677 INFO L87 Difference]: Start difference. First operand 253 states and 299 transitions. Second operand has 16 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 7 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:02:16,688 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 20:02:20,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:02:24,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:02:29,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:02:33,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-12 20:02:33,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:33,258 INFO L93 Difference]: Finished difference Result 277 states and 300 transitions. [2024-09-12 20:02:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 20:02:33,258 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 7 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2024-09-12 20:02:33,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:33,260 INFO L225 Difference]: With dead ends: 277 [2024-09-12 20:02:33,260 INFO L226 Difference]: Without dead ends: 276 [2024-09-12 20:02:33,260 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2024-09-12 20:02:33,261 INFO L434 NwaCegarLoop]: 134 mSDtfsCounter, 296 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 27 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:33,261 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1532 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 490 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2024-09-12 20:02:33,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-09-12 20:02:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 253. [2024-09-12 20:02:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 164 states have (on average 1.5182926829268293) internal successors, (249), 217 states have internal predecessors, (249), 23 states have call successors, (23), 14 states have call predecessors, (23), 15 states have return successors, (26), 23 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 20:02:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 298 transitions. [2024-09-12 20:02:33,336 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 298 transitions. Word has length 41 [2024-09-12 20:02:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:33,336 INFO L474 AbstractCegarLoop]: Abstraction has 253 states and 298 transitions. [2024-09-12 20:02:33,336 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 7 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:02:33,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 298 transitions. [2024-09-12 20:02:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 20:02:33,337 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:33,337 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:33,351 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 20:02:33,537 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 20:02:33,538 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_47_to_56_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:33,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash 806101966, now seen corresponding path program 1 times [2024-09-12 20:02:33,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:33,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611741186] [2024-09-12 20:02:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:33,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:33,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22736856] [2024-09-12 20:02:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:33,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:33,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:33,568 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:33,569 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 20:02:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:33,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-12 20:02:33,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:33,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:33,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:33,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:02:33,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:02:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:02:33,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611741186] [2024-09-12 20:02:34,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22736856] [2024-09-12 20:02:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22736856] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:34,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:34,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-09-12 20:02:34,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175818341] [2024-09-12 20:02:34,178 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:34,178 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 20:02:34,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:34,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 20:02:34,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:02:34,179 INFO L87 Difference]: Start difference. First operand 253 states and 298 transitions. Second operand has 16 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:02:38,196 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 20:02:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:38,801 INFO L93 Difference]: Finished difference Result 276 states and 299 transitions. [2024-09-12 20:02:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 20:02:38,802 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 42 [2024-09-12 20:02:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:38,803 INFO L225 Difference]: With dead ends: 276 [2024-09-12 20:02:38,803 INFO L226 Difference]: Without dead ends: 275 [2024-09-12 20:02:38,804 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2024-09-12 20:02:38,804 INFO L434 NwaCegarLoop]: 135 mSDtfsCounter, 346 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:38,804 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1211 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 414 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-09-12 20:02:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-12 20:02:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 253. [2024-09-12 20:02:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 164 states have (on average 1.5121951219512195) internal successors, (248), 217 states have internal predecessors, (248), 23 states have call successors, (23), 14 states have call predecessors, (23), 15 states have return successors, (26), 23 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 20:02:38,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 297 transitions. [2024-09-12 20:02:38,878 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 297 transitions. Word has length 42 [2024-09-12 20:02:38,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:38,879 INFO L474 AbstractCegarLoop]: Abstraction has 253 states and 297 transitions. [2024-09-12 20:02:38,879 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:02:38,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:38,879 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 297 transitions. [2024-09-12 20:02:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 20:02:38,879 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:38,879 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:38,893 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 20:02:39,080 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 20:02:39,080 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_47_to_56_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:39,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:39,080 INFO L85 PathProgramCache]: Analyzing trace with hash -780642739, now seen corresponding path program 1 times [2024-09-12 20:02:39,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:39,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377516254] [2024-09-12 20:02:39,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:39,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:39,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893912816] [2024-09-12 20:02:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:39,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:39,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:39,105 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:39,107 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 20:02:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:39,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-12 20:02:39,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:39,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:39,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:39,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:02:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:39,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:39,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:39,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377516254] [2024-09-12 20:02:39,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:39,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893912816] [2024-09-12 20:02:39,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893912816] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:39,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:39,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-09-12 20:02:39,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251039752] [2024-09-12 20:02:39,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:39,484 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 20:02:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:39,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 20:02:39,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:02:39,485 INFO L87 Difference]: Start difference. First operand 253 states and 297 transitions. Second operand has 15 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:02:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:39,958 INFO L93 Difference]: Finished difference Result 279 states and 300 transitions. [2024-09-12 20:02:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 20:02:39,959 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2024-09-12 20:02:39,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:39,960 INFO L225 Difference]: With dead ends: 279 [2024-09-12 20:02:39,960 INFO L226 Difference]: Without dead ends: 278 [2024-09-12 20:02:39,960 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:02:39,961 INFO L434 NwaCegarLoop]: 134 mSDtfsCounter, 162 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:39,961 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1701 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-09-12 20:02:40,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 253. [2024-09-12 20:02:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 164 states have (on average 1.5060975609756098) internal successors, (247), 217 states have internal predecessors, (247), 23 states have call successors, (23), 14 states have call predecessors, (23), 15 states have return successors, (26), 23 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 20:02:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 296 transitions. [2024-09-12 20:02:40,034 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 296 transitions. Word has length 43 [2024-09-12 20:02:40,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:40,034 INFO L474 AbstractCegarLoop]: Abstraction has 253 states and 296 transitions. [2024-09-12 20:02:40,034 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:02:40,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 296 transitions. [2024-09-12 20:02:40,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-12 20:02:40,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:40,035 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:40,053 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:40,235 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:40,236 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_47_to_56_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:40,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:40,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1569878960, now seen corresponding path program 1 times [2024-09-12 20:02:40,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:40,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862786747] [2024-09-12 20:02:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:40,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:40,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596828936] [2024-09-12 20:02:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:40,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:40,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:40,266 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:40,267 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 20:02:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:40,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-12 20:02:40,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:40,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:40,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:40,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:02:40,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:02:40,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:02:40,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-09-12 20:02:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:40,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:40,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862786747] [2024-09-12 20:02:40,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596828936] [2024-09-12 20:02:40,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596828936] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:40,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:40,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-09-12 20:02:40,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385617351] [2024-09-12 20:02:40,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:40,913 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 20:02:40,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:40,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 20:02:40,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:02:40,914 INFO L87 Difference]: Start difference. First operand 253 states and 296 transitions. Second operand has 19 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 7 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:02:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:41,733 INFO L93 Difference]: Finished difference Result 278 states and 299 transitions. [2024-09-12 20:02:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-12 20:02:41,734 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 7 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2024-09-12 20:02:41,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:41,735 INFO L225 Difference]: With dead ends: 278 [2024-09-12 20:02:41,735 INFO L226 Difference]: Without dead ends: 277 [2024-09-12 20:02:41,736 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2024-09-12 20:02:41,736 INFO L434 NwaCegarLoop]: 130 mSDtfsCounter, 279 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:41,736 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1736 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 20:02:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-09-12 20:02:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 253. [2024-09-12 20:02:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 164 states have (on average 1.5) internal successors, (246), 217 states have internal predecessors, (246), 23 states have call successors, (23), 14 states have call predecessors, (23), 15 states have return successors, (26), 23 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 20:02:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 295 transitions. [2024-09-12 20:02:41,819 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 295 transitions. Word has length 44 [2024-09-12 20:02:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:41,819 INFO L474 AbstractCegarLoop]: Abstraction has 253 states and 295 transitions. [2024-09-12 20:02:41,819 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 7 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:02:41,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 295 transitions. [2024-09-12 20:02:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 20:02:41,819 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:41,820 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:41,833 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:42,020 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:42,020 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_47_to_56_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:42,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1421607599, now seen corresponding path program 1 times [2024-09-12 20:02:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:42,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136533416] [2024-09-12 20:02:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:42,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771942892] [2024-09-12 20:02:42,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:42,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:42,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:42,046 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:42,048 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 20:02:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:42,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 146 conjuncts are in the unsatisfiable core [2024-09-12 20:02:42,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:42,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:42,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:42,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:02:42,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:42,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:42,330 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 11 treesize of output 7 [2024-09-12 20:02:42,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-12 20:02:42,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-09-12 20:02:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:42,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:42,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:42,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136533416] [2024-09-12 20:02:42,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:42,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771942892] [2024-09-12 20:02:42,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771942892] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:42,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:42,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-09-12 20:02:42,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443640165] [2024-09-12 20:02:42,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:42,566 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 20:02:42,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 20:02:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:02:42,566 INFO L87 Difference]: Start difference. First operand 253 states and 295 transitions. Second operand has 15 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 6 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:02:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:43,159 INFO L93 Difference]: Finished difference Result 273 states and 296 transitions. [2024-09-12 20:02:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 20:02:43,159 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 6 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2024-09-12 20:02:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:43,160 INFO L225 Difference]: With dead ends: 273 [2024-09-12 20:02:43,161 INFO L226 Difference]: Without dead ends: 272 [2024-09-12 20:02:43,161 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:02:43,161 INFO L434 NwaCegarLoop]: 131 mSDtfsCounter, 283 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:43,161 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1192 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:02:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-09-12 20:02:43,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 253. [2024-09-12 20:02:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 164 states have (on average 1.4939024390243902) internal successors, (245), 217 states have internal predecessors, (245), 23 states have call successors, (23), 14 states have call predecessors, (23), 15 states have return successors, (26), 23 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 20:02:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 294 transitions. [2024-09-12 20:02:43,251 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 294 transitions. Word has length 45 [2024-09-12 20:02:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:43,251 INFO L474 AbstractCegarLoop]: Abstraction has 253 states and 294 transitions. [2024-09-12 20:02:43,251 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 6 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:02:43,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 294 transitions. [2024-09-12 20:02:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 20:02:43,252 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:43,252 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:43,270 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:43,453 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:43,454 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_47_to_56_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:43,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:43,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1120162706, now seen corresponding path program 1 times [2024-09-12 20:02:43,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:43,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899986984] [2024-09-12 20:02:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:43,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:43,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143497648] [2024-09-12 20:02:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:43,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:43,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:43,481 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:43,482 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 20:02:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:43,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-12 20:02:43,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:43,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:43,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:43,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:43,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:02:43,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:02:43,786 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 11 treesize of output 7 [2024-09-12 20:02:43,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-12 20:02:43,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:02:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:44,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:44,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:44,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899986984] [2024-09-12 20:02:44,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:44,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143497648] [2024-09-12 20:02:44,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143497648] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:44,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:44,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-09-12 20:02:44,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414032594] [2024-09-12 20:02:44,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:44,010 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 20:02:44,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:44,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 20:02:44,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:02:44,011 INFO L87 Difference]: Start difference. First operand 253 states and 294 transitions. Second operand has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:02:44,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:44,579 INFO L93 Difference]: Finished difference Result 272 states and 295 transitions. [2024-09-12 20:02:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 20:02:44,580 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2024-09-12 20:02:44,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:44,581 INFO L225 Difference]: With dead ends: 272 [2024-09-12 20:02:44,581 INFO L226 Difference]: Without dead ends: 271 [2024-09-12 20:02:44,581 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:02:44,584 INFO L434 NwaCegarLoop]: 132 mSDtfsCounter, 346 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:44,584 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 945 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:02:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-09-12 20:02:44,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2024-09-12 20:02:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 164 states have (on average 1.4878048780487805) internal successors, (244), 217 states have internal predecessors, (244), 23 states have call successors, (23), 14 states have call predecessors, (23), 15 states have return successors, (26), 23 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 20:02:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 293 transitions. [2024-09-12 20:02:44,685 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 293 transitions. Word has length 46 [2024-09-12 20:02:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:44,685 INFO L474 AbstractCegarLoop]: Abstraction has 253 states and 293 transitions. [2024-09-12 20:02:44,685 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 6 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:02:44,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:44,686 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 293 transitions. [2024-09-12 20:02:44,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 20:02:44,686 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:44,686 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:44,704 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 20:02:44,887 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 20:02:44,887 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:02:44,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:44,887 INFO L85 PathProgramCache]: Analyzing trace with hash 539719189, now seen corresponding path program 1 times [2024-09-12 20:02:44,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:44,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660222582] [2024-09-12 20:02:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:44,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:45,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:45,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:45,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:02:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:45,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 20:02:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:45,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 20:02:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:45,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 20:02:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 20:02:45,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:45,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660222582] [2024-09-12 20:02:45,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660222582] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:45,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702733280] [2024-09-12 20:02:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:45,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:45,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:45,695 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:02:45,696 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 20:02:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:45,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-12 20:02:45,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:46,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:02:46,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:46,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:02:46,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2024-09-12 20:02:46,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:02:46,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:02:46,192 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 23 treesize of output 15 [2024-09-12 20:02:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:02:54,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:55,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702733280] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:02:55,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:02:55,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 18] total 48 [2024-09-12 20:02:55,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165142852] [2024-09-12 20:02:55,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:55,168 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 20:02:55,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:55,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 20:02:55,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2058, Unknown=2, NotChecked=0, Total=2256 [2024-09-12 20:02:55,169 INFO L87 Difference]: Start difference. First operand 253 states and 293 transitions. Second operand has 48 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 16 states have call successors, (17), 10 states have call predecessors, (17), 12 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 20:02:59,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:03:01,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:01,523 INFO L93 Difference]: Finished difference Result 304 states and 345 transitions. [2024-09-12 20:03:01,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 20:03:01,523 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 16 states have call successors, (17), 10 states have call predecessors, (17), 12 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Word has length 46 [2024-09-12 20:03:01,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:01,524 INFO L225 Difference]: With dead ends: 304 [2024-09-12 20:03:01,524 INFO L226 Difference]: Without dead ends: 268 [2024-09-12 20:03:01,525 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=487, Invalid=3933, Unknown=2, NotChecked=0, Total=4422 [2024-09-12 20:03:01,526 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 458 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 2756 mSolverCounterSat, 119 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2756 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:01,526 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1165 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2756 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2024-09-12 20:03:01,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-09-12 20:03:01,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 258. [2024-09-12 20:03:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 167 states have (on average 1.4910179640718564) internal successors, (249), 221 states have internal predecessors, (249), 24 states have call successors, (24), 14 states have call predecessors, (24), 16 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-09-12 20:03:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 303 transitions. [2024-09-12 20:03:01,628 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 303 transitions. Word has length 46 [2024-09-12 20:03:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:01,628 INFO L474 AbstractCegarLoop]: Abstraction has 258 states and 303 transitions. [2024-09-12 20:03:01,629 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 40 states have (on average 2.1) internal successors, (84), 39 states have internal predecessors, (84), 16 states have call successors, (17), 10 states have call predecessors, (17), 12 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 20:03:01,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 303 transitions. [2024-09-12 20:03:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 20:03:01,629 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:01,629 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:01,643 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-12 20:03:01,829 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 20:03:01,830 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_47_to_56_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:03:01,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash 630446377, now seen corresponding path program 1 times [2024-09-12 20:03:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:01,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412949134] [2024-09-12 20:03:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:01,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627007672] [2024-09-12 20:03:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:01,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:01,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:01,872 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:03:01,873 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 20:03:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:02,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 179 conjuncts are in the unsatisfiable core [2024-09-12 20:03:02,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:02,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:02,148 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 23 treesize of output 15 [2024-09-12 20:03:02,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:02,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:02,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:02,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:03:02,281 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 11 treesize of output 7 [2024-09-12 20:03:02,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 11 [2024-09-12 20:03:02,379 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 20:03:02,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2024-09-12 20:03:02,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:02,512 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 27 treesize of output 19 [2024-09-12 20:03:02,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:02,586 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 20:03:02,589 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 20:03:02,682 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 20:03:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:03:02,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:03,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:03,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412949134] [2024-09-12 20:03:03,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:03,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627007672] [2024-09-12 20:03:03,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627007672] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:03,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:03,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-09-12 20:03:03,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346639838] [2024-09-12 20:03:03,622 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:03,622 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 20:03:03,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:03,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 20:03:03,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 20:03:03,623 INFO L87 Difference]: Start difference. First operand 258 states and 303 transitions. Second operand has 23 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 19 states have internal predecessors, (35), 8 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:03:07,648 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 20:03:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:10,442 INFO L93 Difference]: Finished difference Result 415 states and 475 transitions. [2024-09-12 20:03:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 20:03:10,442 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 19 states have internal predecessors, (35), 8 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 48 [2024-09-12 20:03:10,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:10,445 INFO L225 Difference]: With dead ends: 415 [2024-09-12 20:03:10,445 INFO L226 Difference]: Without dead ends: 410 [2024-09-12 20:03:10,446 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=248, Invalid=3058, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 20:03:10,446 INFO L434 NwaCegarLoop]: 134 mSDtfsCounter, 521 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:10,446 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 2331 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2581 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2024-09-12 20:03:10,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-09-12 20:03:10,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 315. [2024-09-12 20:03:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 212 states have (on average 1.5235849056603774) internal successors, (323), 269 states have internal predecessors, (323), 33 states have call successors, (33), 17 states have call predecessors, (33), 19 states have return successors, (42), 31 states have call predecessors, (42), 31 states have call successors, (42) [2024-09-12 20:03:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 398 transitions. [2024-09-12 20:03:10,586 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 398 transitions. Word has length 48 [2024-09-12 20:03:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:10,587 INFO L474 AbstractCegarLoop]: Abstraction has 315 states and 398 transitions. [2024-09-12 20:03:10,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 19 states have internal predecessors, (35), 8 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:03:10,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 398 transitions. [2024-09-12 20:03:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 20:03:10,588 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:10,588 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:10,605 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-12 20:03:10,789 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 20:03:10,789 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_33_to_70_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:03:10,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash 628850634, now seen corresponding path program 1 times [2024-09-12 20:03:10,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:10,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740933747] [2024-09-12 20:03:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:10,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:11,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:03:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:11,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:03:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:11,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:03:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:11,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 20:03:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:11,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 20:03:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 20:03:11,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:11,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740933747] [2024-09-12 20:03:11,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740933747] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:11,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587069462] [2024-09-12 20:03:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:11,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:11,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:11,769 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:03:11,770 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 20:03:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:11,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-12 20:03:11,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:11,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:11,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:03:12,016 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 11 treesize of output 7 [2024-09-12 20:03:12,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-09-12 20:03:12,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2024-09-12 20:03:12,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2024-09-12 20:03:12,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-09-12 20:03:12,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:12,150 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 13 treesize of output 9 [2024-09-12 20:03:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 20:03:12,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:03:12,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587069462] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:03:12,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:03:12,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 13] total 29 [2024-09-12 20:03:12,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614090597] [2024-09-12 20:03:12,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:12,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 20:03:12,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 20:03:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2024-09-12 20:03:12,579 INFO L87 Difference]: Start difference. First operand 315 states and 398 transitions. Second operand has 29 states, 25 states have (on average 2.32) internal successors, (58), 21 states have internal predecessors, (58), 7 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-09-12 20:03:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:14,055 INFO L93 Difference]: Finished difference Result 465 states and 566 transitions. [2024-09-12 20:03:14,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 20:03:14,055 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 2.32) internal successors, (58), 21 states have internal predecessors, (58), 7 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 48 [2024-09-12 20:03:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:14,057 INFO L225 Difference]: With dead ends: 465 [2024-09-12 20:03:14,057 INFO L226 Difference]: Without dead ends: 309 [2024-09-12 20:03:14,058 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=1225, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 20:03:14,058 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 253 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:14,058 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 980 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 20:03:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-09-12 20:03:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 301. [2024-09-12 20:03:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 201 states have (on average 1.5174129353233832) internal successors, (305), 257 states have internal predecessors, (305), 32 states have call successors, (32), 17 states have call predecessors, (32), 17 states have return successors, (35), 29 states have call predecessors, (35), 30 states have call successors, (35) [2024-09-12 20:03:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 372 transitions. [2024-09-12 20:03:14,191 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 372 transitions. Word has length 48 [2024-09-12 20:03:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:14,191 INFO L474 AbstractCegarLoop]: Abstraction has 301 states and 372 transitions. [2024-09-12 20:03:14,192 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 2.32) internal successors, (58), 21 states have internal predecessors, (58), 7 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-09-12 20:03:14,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 372 transitions. [2024-09-12 20:03:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 20:03:14,192 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:14,192 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:14,206 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-12 20:03:14,393 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 20:03:14,393 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_47_to_56_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:03:14,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:14,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1930998718, now seen corresponding path program 1 times [2024-09-12 20:03:14,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:14,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724037234] [2024-09-12 20:03:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:14,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:14,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339947485] [2024-09-12 20:03:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:14,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:14,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:14,419 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:03:14,420 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 20:03:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:14,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 155 conjuncts are in the unsatisfiable core [2024-09-12 20:03:14,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:14,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:14,774 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 23 treesize of output 15 [2024-09-12 20:03:14,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:14,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:14,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:03:14,872 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 23 treesize of output 15 [2024-09-12 20:03:14,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:15,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-09-12 20:03:15,160 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-09-12 20:03:15,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 51 [2024-09-12 20:03:15,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:15,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:03:15,792 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 79 treesize of output 99 [2024-09-12 20:03:16,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:03:16,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 143 [2024-09-12 20:03:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:03:16,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:18,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:18,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724037234] [2024-09-12 20:03:18,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:18,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339947485] [2024-09-12 20:03:18,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339947485] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:18,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:18,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2024-09-12 20:03:18,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133117622] [2024-09-12 20:03:18,127 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:18,127 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 20:03:18,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:18,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 20:03:18,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 20:03:18,129 INFO L87 Difference]: Start difference. First operand 301 states and 372 transitions. Second operand has 26 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 19 states have internal predecessors, (36), 8 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:03:22,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:03:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:27,155 INFO L93 Difference]: Finished difference Result 456 states and 538 transitions. [2024-09-12 20:03:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 20:03:27,156 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 19 states have internal predecessors, (36), 8 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 49 [2024-09-12 20:03:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:27,157 INFO L225 Difference]: With dead ends: 456 [2024-09-12 20:03:27,158 INFO L226 Difference]: Without dead ends: 455 [2024-09-12 20:03:27,158 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=299, Invalid=3123, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 20:03:27,159 INFO L434 NwaCegarLoop]: 140 mSDtfsCounter, 525 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:27,159 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 2186 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2698 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2024-09-12 20:03:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-09-12 20:03:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 351. [2024-09-12 20:03:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 242 states have (on average 1.5454545454545454) internal successors, (374), 300 states have internal predecessors, (374), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (41), 36 states have call predecessors, (41), 37 states have call successors, (41) [2024-09-12 20:03:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 454 transitions. [2024-09-12 20:03:27,344 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 454 transitions. Word has length 49 [2024-09-12 20:03:27,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:27,345 INFO L474 AbstractCegarLoop]: Abstraction has 351 states and 454 transitions. [2024-09-12 20:03:27,345 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 19 states have internal predecessors, (36), 8 states have call successors, (9), 8 states have call predecessors, (9), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 20:03:27,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:27,345 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 454 transitions. [2024-09-12 20:03:27,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 20:03:27,345 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:27,345 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:27,359 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 20:03:27,546 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 20:03:27,546 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_47_to_56_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:03:27,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:27,546 INFO L85 PathProgramCache]: Analyzing trace with hash 268581963, now seen corresponding path program 1 times [2024-09-12 20:03:27,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:27,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525811066] [2024-09-12 20:03:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:27,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:27,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602484960] [2024-09-12 20:03:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:27,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:27,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:27,575 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:03:27,577 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 20:03:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:27,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-12 20:03:27,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:27,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:27,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:03:27,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:03:29,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525811066] [2024-09-12 20:03:29,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602484960] [2024-09-12 20:03:29,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602484960] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:03:29,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:03:29,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2024-09-12 20:03:29,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303020842] [2024-09-12 20:03:29,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:29,228 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:03:29,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:29,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:03:29,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:03:29,228 INFO L87 Difference]: Start difference. First operand 351 states and 454 transitions. Second operand has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 20:03:29,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:29,832 INFO L93 Difference]: Finished difference Result 463 states and 557 transitions. [2024-09-12 20:03:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 20:03:29,832 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2024-09-12 20:03:29,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:29,834 INFO L225 Difference]: With dead ends: 463 [2024-09-12 20:03:29,834 INFO L226 Difference]: Without dead ends: 461 [2024-09-12 20:03:29,834 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:03:29,835 INFO L434 NwaCegarLoop]: 219 mSDtfsCounter, 232 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:29,835 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 2253 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:03:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-09-12 20:03:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 413. [2024-09-12 20:03:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 290 states have (on average 1.5448275862068965) internal successors, (448), 352 states have internal predecessors, (448), 48 states have call successors, (48), 22 states have call predecessors, (48), 24 states have return successors, (53), 44 states have call predecessors, (53), 46 states have call successors, (53) [2024-09-12 20:03:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 549 transitions. [2024-09-12 20:03:30,045 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 549 transitions. Word has length 50 [2024-09-12 20:03:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:30,045 INFO L474 AbstractCegarLoop]: Abstraction has 413 states and 549 transitions. [2024-09-12 20:03:30,045 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 20:03:30,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 549 transitions. [2024-09-12 20:03:30,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 20:03:30,045 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:30,045 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:30,062 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-12 20:03:30,246 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 20:03:30,246 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:03:30,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:30,246 INFO L85 PathProgramCache]: Analyzing trace with hash -623571428, now seen corresponding path program 1 times [2024-09-12 20:03:30,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:30,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151824009] [2024-09-12 20:03:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:30,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:30,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77224800] [2024-09-12 20:03:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:30,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:30,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:30,289 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:03:30,292 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 20:03:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:30,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 129 conjuncts are in the unsatisfiable core [2024-09-12 20:03:30,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:30,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:30,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:03:30,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:30,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:30,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-12 20:03:30,741 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 20:03:30,760 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 20:03:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:03:30,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:30,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-09-12 20:03:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:03:31,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:31,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151824009] [2024-09-12 20:03:31,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:31,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77224800] [2024-09-12 20:03:31,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77224800] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:31,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:31,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 24 [2024-09-12 20:03:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675470705] [2024-09-12 20:03:31,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:03:31,469 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 20:03:31,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:31,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 20:03:31,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-09-12 20:03:31,469 INFO L87 Difference]: Start difference. First operand 413 states and 549 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 6 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:03:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:34,825 INFO L93 Difference]: Finished difference Result 435 states and 554 transitions. [2024-09-12 20:03:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:03:34,825 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 6 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-09-12 20:03:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:34,828 INFO L225 Difference]: With dead ends: 435 [2024-09-12 20:03:34,828 INFO L226 Difference]: Without dead ends: 433 [2024-09-12 20:03:34,828 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2024-09-12 20:03:34,829 INFO L434 NwaCegarLoop]: 140 mSDtfsCounter, 123 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:34,829 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1643 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-09-12 20:03:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-09-12 20:03:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 417. [2024-09-12 20:03:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 293 states have (on average 1.5392491467576792) internal successors, (451), 355 states have internal predecessors, (451), 48 states have call successors, (48), 23 states have call predecessors, (48), 25 states have return successors, (53), 44 states have call predecessors, (53), 46 states have call successors, (53) [2024-09-12 20:03:35,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 552 transitions. [2024-09-12 20:03:35,051 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 552 transitions. Word has length 50 [2024-09-12 20:03:35,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:35,051 INFO L474 AbstractCegarLoop]: Abstraction has 417 states and 552 transitions. [2024-09-12 20:03:35,052 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 6 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:03:35,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 552 transitions. [2024-09-12 20:03:35,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-12 20:03:35,052 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:35,052 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:35,066 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-12 20:03:35,252 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 20:03:35,253 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_47_to_56_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:03:35,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:35,253 INFO L85 PathProgramCache]: Analyzing trace with hash 409231213, now seen corresponding path program 1 times [2024-09-12 20:03:35,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:35,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868609814] [2024-09-12 20:03:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:35,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:35,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545726873] [2024-09-12 20:03:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:35,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:35,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:35,287 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:03:35,288 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 20:03:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:35,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-12 20:03:35,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:35,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:35,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:35,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:35,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:35,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:35,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-09-12 20:03:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:03:35,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:46,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868609814] [2024-09-12 20:03:46,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:46,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545726873] [2024-09-12 20:03:46,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545726873] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:46,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:46,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-12 20:03:46,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897241709] [2024-09-12 20:03:46,573 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:46,573 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 20:03:46,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:46,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 20:03:46,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=623, Unknown=2, NotChecked=0, Total=702 [2024-09-12 20:03:46,573 INFO L87 Difference]: Start difference. First operand 417 states and 552 transitions. Second operand has 17 states, 15 states have (on average 2.4) internal successors, (36), 13 states have internal predecessors, (36), 6 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:03:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:48,352 INFO L93 Difference]: Finished difference Result 465 states and 554 transitions. [2024-09-12 20:03:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 20:03:48,352 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.4) internal successors, (36), 13 states have internal predecessors, (36), 6 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 52 [2024-09-12 20:03:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:48,354 INFO L225 Difference]: With dead ends: 465 [2024-09-12 20:03:48,354 INFO L226 Difference]: Without dead ends: 463 [2024-09-12 20:03:48,355 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=145, Invalid=1043, Unknown=2, NotChecked=0, Total=1190 [2024-09-12 20:03:48,355 INFO L434 NwaCegarLoop]: 204 mSDtfsCounter, 487 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:48,355 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 2061 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:03:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-09-12 20:03:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 417. [2024-09-12 20:03:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 293 states have (on average 1.522184300341297) internal successors, (446), 355 states have internal predecessors, (446), 48 states have call successors, (48), 23 states have call predecessors, (48), 25 states have return successors, (53), 44 states have call predecessors, (53), 46 states have call successors, (53) [2024-09-12 20:03:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 547 transitions. [2024-09-12 20:03:48,602 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 547 transitions. Word has length 52 [2024-09-12 20:03:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:48,602 INFO L474 AbstractCegarLoop]: Abstraction has 417 states and 547 transitions. [2024-09-12 20:03:48,602 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.4) internal successors, (36), 13 states have internal predecessors, (36), 6 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:03:48,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 547 transitions. [2024-09-12 20:03:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 20:03:48,603 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:48,603 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:48,621 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-12 20:03:48,803 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 20:03:48,804 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_47_to_56_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:03:48,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:48,804 INFO L85 PathProgramCache]: Analyzing trace with hash -198734202, now seen corresponding path program 1 times [2024-09-12 20:03:48,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:48,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095315997] [2024-09-12 20:03:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:48,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:48,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251693968] [2024-09-12 20:03:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:48,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:48,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:48,834 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:03:48,835 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 20:03:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:49,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-09-12 20:03:49,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:49,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:49,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:49,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:49,108 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 11 [2024-09-12 20:03:49,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:49,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 20:03:49,166 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 11 [2024-09-12 20:03:49,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 20:03:49,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:03:49,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2024-09-12 20:03:49,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:49,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:03:49,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:03:49,626 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 20:03:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:03:49,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:12,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:12,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095315997] [2024-09-12 20:04:12,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:12,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251693968] [2024-09-12 20:04:12,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251693968] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:12,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:12,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-09-12 20:04:12,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900972474] [2024-09-12 20:04:12,659 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:12,659 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 20:04:12,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:12,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 20:04:12,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=724, Unknown=5, NotChecked=0, Total=812 [2024-09-12 20:04:12,660 INFO L87 Difference]: Start difference. First operand 417 states and 547 transitions. Second operand has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 6 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:04:15,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:15,941 INFO L93 Difference]: Finished difference Result 515 states and 621 transitions. [2024-09-12 20:04:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 20:04:15,942 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 6 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2024-09-12 20:04:15,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:15,943 INFO L225 Difference]: With dead ends: 515 [2024-09-12 20:04:15,944 INFO L226 Difference]: Without dead ends: 513 [2024-09-12 20:04:15,944 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=163, Invalid=1314, Unknown=5, NotChecked=0, Total=1482 [2024-09-12 20:04:15,945 INFO L434 NwaCegarLoop]: 142 mSDtfsCounter, 370 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:15,945 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1764 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-12 20:04:15,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-09-12 20:04:16,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 417. [2024-09-12 20:04:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 293 states have (on average 1.5085324232081911) internal successors, (442), 355 states have internal predecessors, (442), 48 states have call successors, (48), 23 states have call predecessors, (48), 25 states have return successors, (53), 44 states have call predecessors, (53), 46 states have call successors, (53) [2024-09-12 20:04:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 543 transitions. [2024-09-12 20:04:16,206 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 543 transitions. Word has length 53 [2024-09-12 20:04:16,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:16,206 INFO L474 AbstractCegarLoop]: Abstraction has 417 states and 543 transitions. [2024-09-12 20:04:16,207 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 6 states have call successors, (9), 7 states have call predecessors, (9), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:04:16,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:16,207 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 543 transitions. [2024-09-12 20:04:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 20:04:16,207 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:16,207 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:16,221 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-12 20:04:16,411 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:16,411 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_47_to_56_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:04:16,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1077899223, now seen corresponding path program 1 times [2024-09-12 20:04:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548174227] [2024-09-12 20:04:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:16,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370136871] [2024-09-12 20:04:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:16,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:16,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:16,434 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:04:16,436 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 20:04:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:16,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-12 20:04:16,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:16,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:04:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 20:04:16,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:16,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:16,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548174227] [2024-09-12 20:04:16,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:16,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370136871] [2024-09-12 20:04:16,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370136871] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:16,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:16,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:04:16,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036705984] [2024-09-12 20:04:16,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:16,742 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:04:16,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:16,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:04:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:04:16,742 INFO L87 Difference]: Start difference. First operand 417 states and 543 transitions. Second operand has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 20:04:17,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:17,275 INFO L93 Difference]: Finished difference Result 605 states and 784 transitions. [2024-09-12 20:04:17,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:04:17,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2024-09-12 20:04:17,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:17,277 INFO L225 Difference]: With dead ends: 605 [2024-09-12 20:04:17,277 INFO L226 Difference]: Without dead ends: 599 [2024-09-12 20:04:17,278 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:04:17,278 INFO L434 NwaCegarLoop]: 144 mSDtfsCounter, 136 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:17,278 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1137 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-09-12 20:04:17,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 556. [2024-09-12 20:04:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 407 states have (on average 1.4914004914004915) internal successors, (607), 473 states have internal predecessors, (607), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (71), 59 states have call predecessors, (71), 64 states have call successors, (71) [2024-09-12 20:04:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 744 transitions. [2024-09-12 20:04:17,635 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 744 transitions. Word has length 53 [2024-09-12 20:04:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:17,635 INFO L474 AbstractCegarLoop]: Abstraction has 556 states and 744 transitions. [2024-09-12 20:04:17,636 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 20:04:17,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 744 transitions. [2024-09-12 20:04:17,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 20:04:17,636 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:17,636 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:17,649 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-12 20:04:17,837 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:17,838 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_47_to_56_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-09-12 20:04:17,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash -774031669, now seen corresponding path program 1 times [2024-09-12 20:04:17,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:17,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258229222] [2024-09-12 20:04:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:17,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat