./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-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_ps3-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 e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 --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 20:04:30,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 20:04:30,973 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 20:04:30,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 20:04:30,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 20:04:30,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 20:04:30,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 20:04:30,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 20:04:31,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 20:04:31,001 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 20:04:31,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 20:04:31,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 20:04:31,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 20:04:31,002 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 20:04:31,002 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 20:04:31,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 20:04:31,002 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 20:04:31,003 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 20:04:31,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 20:04:31,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 20:04:31,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 20:04:31,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 20:04:31,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 20:04:31,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 20:04:31,008 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 20:04:31,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 20:04:31,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 20:04:31,008 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 20:04:31,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 20:04:31,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 20:04:31,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 20:04:31,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 20:04:31,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:04:31,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 20:04:31,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 20:04:31,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 20:04:31,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 20:04:31,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 20:04:31,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 20:04:31,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 20:04:31,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 20:04:31,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 20:04:31,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 20:04:31,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 20:04:31,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 20:04:31,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 20:04:31,278 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 20:04:31,278 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 20:04:31,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-09-12 20:04:32,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 20:04:32,670 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 20:04:32,671 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-09-12 20:04:32,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/90408c2cc/347a343e6178452b91c308d85453f281/FLAG9c0080077 [2024-09-12 20:04:32,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/90408c2cc/347a343e6178452b91c308d85453f281 [2024-09-12 20:04:32,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 20:04:32,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 20:04:32,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 20:04:32,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 20:04:32,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 20:04:32,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628fd032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32, skipping insertion in model container [2024-09-12 20:04:32,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,713 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 20:04:32,829 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_ps3-ll.c[987,1000] [2024-09-12 20:04:32,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:04:32,868 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 20:04:32,885 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_ps3-ll.c[987,1000] [2024-09-12 20:04:32,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:04:32,916 INFO L204 MainTranslator]: Completed translation [2024-09-12 20:04:32,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32 WrapperNode [2024-09-12 20:04:32,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 20:04:32,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 20:04:32,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 20:04:32,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 20:04:32,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,936 INFO L138 Inliner]: procedures = 16, calls = 51, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 20:04:32,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 20:04:32,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 20:04:32,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 20:04:32,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 20:04:32,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,973 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 4, 5, 17, 2]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 2, 2, 1]. [2024-09-12 20:04:32,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,980 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:32,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 20:04:32,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 20:04:32,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 20:04:32,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 20:04:32,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (1/1) ... [2024-09-12 20:04:33,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:04:33,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:33,021 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 20:04:33,024 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 20:04:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 20:04:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 20:04:33,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 20:04:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 20:04:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 20:04:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 20:04:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-12 20:04:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-12 20:04:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 20:04:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 20:04:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 20:04:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 20:04:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-12 20:04:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-12 20:04:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 20:04:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 20:04:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 20:04:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 20:04:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 20:04:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 20:04:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 20:04:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-12 20:04:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-12 20:04:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-09-12 20:04:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-09-12 20:04:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 20:04:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 20:04:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 20:04:33,129 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 20:04:33,131 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 20:04:33,643 INFO L? ?]: Removed 127 outVars from TransFormulas that were not future-live. [2024-09-12 20:04:33,643 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 20:04:33,667 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 20:04:33,668 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 20:04:33,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:04:33 BoogieIcfgContainer [2024-09-12 20:04:33,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 20:04:33,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 20:04:33,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 20:04:33,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 20:04:33,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 08:04:32" (1/3) ... [2024-09-12 20:04:33,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ce4cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:04:33, skipping insertion in model container [2024-09-12 20:04:33,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:04:32" (2/3) ... [2024-09-12 20:04:33,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ce4cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:04:33, skipping insertion in model container [2024-09-12 20:04:33,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:04:33" (3/3) ... [2024-09-12 20:04:33,676 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps3-ll.c [2024-09-12 20:04:33,688 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 20:04:33,688 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2024-09-12 20:04:33,745 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 20:04:33,752 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;@d4476b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 20:04:33,753 INFO L337 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2024-09-12 20:04:33,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 104 states have internal predecessors, (106), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 20:04:33,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-12 20:04:33,763 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:33,763 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:33,764 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:33,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:33,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1725303368, now seen corresponding path program 1 times [2024-09-12 20:04:33,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:33,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066478114] [2024-09-12 20:04:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:33,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:34,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:34,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066478114] [2024-09-12 20:04:34,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066478114] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:34,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:34,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:04:34,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343903066] [2024-09-12 20:04:34,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:34,156 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:04:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:34,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:04:34,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:04:34,175 INFO L87 Difference]: Start difference. First operand has 114 states, 58 states have (on average 1.8275862068965518) internal successors, (106), 104 states have internal predecessors, (106), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:34,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:34,461 INFO L93 Difference]: Finished difference Result 280 states and 297 transitions. [2024-09-12 20:04:34,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:04:34,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-09-12 20:04:34,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:34,470 INFO L225 Difference]: With dead ends: 280 [2024-09-12 20:04:34,470 INFO L226 Difference]: Without dead ends: 168 [2024-09-12 20:04:34,473 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:34,476 INFO L434 NwaCegarLoop]: 94 mSDtfsCounter, 137 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:34,476 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 484 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:04:34,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-12 20:04:34,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 135. [2024-09-12 20:04:34,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.7974683544303798) internal successors, (142), 125 states have internal predecessors, (142), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 155 transitions. [2024-09-12 20:04:34,515 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 155 transitions. Word has length 9 [2024-09-12 20:04:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:34,515 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 155 transitions. [2024-09-12 20:04:34,515 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:34,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 155 transitions. [2024-09-12 20:04:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 20:04:34,516 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:34,517 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:34,517 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 20:04:34,517 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:34,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:34,517 INFO L85 PathProgramCache]: Analyzing trace with hash 159163082, now seen corresponding path program 1 times [2024-09-12 20:04:34,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:34,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5093920] [2024-09-12 20:04:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:34,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:34,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:34,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:34,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5093920] [2024-09-12 20:04:34,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5093920] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:34,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:34,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:04:34,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591344009] [2024-09-12 20:04:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:34,668 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:04:34,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:04:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:04:34,671 INFO L87 Difference]: Start difference. First operand 135 states and 155 transitions. Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:34,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:34,911 INFO L93 Difference]: Finished difference Result 192 states and 196 transitions. [2024-09-12 20:04:34,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:04:34,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 20:04:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:34,913 INFO L225 Difference]: With dead ends: 192 [2024-09-12 20:04:34,913 INFO L226 Difference]: Without dead ends: 186 [2024-09-12 20:04:34,914 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:34,917 INFO L434 NwaCegarLoop]: 81 mSDtfsCounter, 131 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:34,917 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 416 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:04:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-09-12 20:04:34,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 135. [2024-09-12 20:04:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.7215189873417722) internal successors, (136), 125 states have internal predecessors, (136), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 149 transitions. [2024-09-12 20:04:34,941 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 149 transitions. Word has length 11 [2024-09-12 20:04:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:34,942 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 149 transitions. [2024-09-12 20:04:34,942 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:34,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 149 transitions. [2024-09-12 20:04:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 20:04:34,943 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:34,943 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:34,943 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 20:04:34,943 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:34,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:34,944 INFO L85 PathProgramCache]: Analyzing trace with hash 116382800, now seen corresponding path program 1 times [2024-09-12 20:04:34,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:34,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392866393] [2024-09-12 20:04:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:34,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:35,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:35,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:35,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392866393] [2024-09-12 20:04:35,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392866393] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:35,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:35,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:35,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056996795] [2024-09-12 20:04:35,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:35,327 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:35,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:35,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:35,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:35,328 INFO L87 Difference]: Start difference. First operand 135 states and 149 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:35,904 INFO L93 Difference]: Finished difference Result 162 states and 166 transitions. [2024-09-12 20:04:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-12 20:04:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:35,906 INFO L225 Difference]: With dead ends: 162 [2024-09-12 20:04:35,906 INFO L226 Difference]: Without dead ends: 161 [2024-09-12 20:04:35,906 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:04:35,907 INFO L434 NwaCegarLoop]: 92 mSDtfsCounter, 109 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:35,907 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 547 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:04:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-09-12 20:04:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 135. [2024-09-12 20:04:35,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.7088607594936709) internal successors, (135), 125 states have internal predecessors, (135), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 148 transitions. [2024-09-12 20:04:35,922 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 148 transitions. Word has length 17 [2024-09-12 20:04:35,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:35,923 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 148 transitions. [2024-09-12 20:04:35,923 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:35,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:35,924 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 148 transitions. [2024-09-12 20:04:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 20:04:35,924 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:35,925 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:35,925 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 20:04:35,925 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:35,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:35,925 INFO L85 PathProgramCache]: Analyzing trace with hash -687100396, now seen corresponding path program 1 times [2024-09-12 20:04:35,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:35,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637274076] [2024-09-12 20:04:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:35,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12605210] [2024-09-12 20:04:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:35,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:35,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:35,944 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 20:04:35,945 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 20:04:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:36,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-12 20:04:36,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:36,047 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 20:04:36,051 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 20:04:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:36,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:36,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:36,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637274076] [2024-09-12 20:04:36,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:36,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12605210] [2024-09-12 20:04:36,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12605210] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:36,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:36,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342033307] [2024-09-12 20:04:36,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:36,144 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:36,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:36,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:36,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:36,145 INFO L87 Difference]: Start difference. First operand 135 states and 148 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:36,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:36,327 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2024-09-12 20:04:36,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:36,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-09-12 20:04:36,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:36,329 INFO L225 Difference]: With dead ends: 153 [2024-09-12 20:04:36,329 INFO L226 Difference]: Without dead ends: 152 [2024-09-12 20:04:36,329 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:04:36,330 INFO L434 NwaCegarLoop]: 88 mSDtfsCounter, 107 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:36,331 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 497 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-12 20:04:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 135. [2024-09-12 20:04:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.6962025316455696) internal successors, (134), 125 states have internal predecessors, (134), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 147 transitions. [2024-09-12 20:04:36,351 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 147 transitions. Word has length 18 [2024-09-12 20:04:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:36,351 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 147 transitions. [2024-09-12 20:04:36,351 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:36,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 147 transitions. [2024-09-12 20:04:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 20:04:36,352 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:36,352 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:36,365 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 20:04:36,552 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:36,553 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:36,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash 174724306, now seen corresponding path program 1 times [2024-09-12 20:04:36,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:36,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996516062] [2024-09-12 20:04:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:36,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:36,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:36,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996516062] [2024-09-12 20:04:36,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996516062] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:36,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:36,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:36,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297609702] [2024-09-12 20:04:36,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:36,675 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:36,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:36,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:36,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:36,677 INFO L87 Difference]: Start difference. First operand 135 states and 147 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:36,816 INFO L93 Difference]: Finished difference Result 184 states and 188 transitions. [2024-09-12 20:04:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:36,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-09-12 20:04:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:36,817 INFO L225 Difference]: With dead ends: 184 [2024-09-12 20:04:36,817 INFO L226 Difference]: Without dead ends: 183 [2024-09-12 20:04:36,822 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:04:36,823 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 117 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:36,823 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 419 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:36,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-09-12 20:04:36,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 135. [2024-09-12 20:04:36,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.6835443037974684) internal successors, (133), 125 states have internal predecessors, (133), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2024-09-12 20:04:36,840 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 19 [2024-09-12 20:04:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:36,841 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2024-09-12 20:04:36,841 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:36,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:36,843 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2024-09-12 20:04:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 20:04:36,843 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:36,843 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:36,844 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 20:04:36,844 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:36,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1121486294, now seen corresponding path program 1 times [2024-09-12 20:04:36,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:36,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186012861] [2024-09-12 20:04:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:36,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:36,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:36,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:36,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186012861] [2024-09-12 20:04:36,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186012861] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:36,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:36,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:36,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782293813] [2024-09-12 20:04:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:36,966 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:36,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:36,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:36,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:36,967 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:37,093 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2024-09-12 20:04:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:37,093 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-09-12 20:04:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:37,094 INFO L225 Difference]: With dead ends: 183 [2024-09-12 20:04:37,095 INFO L226 Difference]: Without dead ends: 182 [2024-09-12 20:04:37,095 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:04:37,096 INFO L434 NwaCegarLoop]: 78 mSDtfsCounter, 113 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:37,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 421 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:37,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-09-12 20:04:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 135. [2024-09-12 20:04:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.6708860759493671) internal successors, (132), 125 states have internal predecessors, (132), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2024-09-12 20:04:37,112 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 20 [2024-09-12 20:04:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:37,112 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2024-09-12 20:04:37,112 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:37,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2024-09-12 20:04:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 20:04:37,113 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:37,113 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:37,113 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 20:04:37,114 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_26_to_34_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:37,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash 406336852, now seen corresponding path program 1 times [2024-09-12 20:04:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:37,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141151169] [2024-09-12 20:04:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:37,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849908930] [2024-09-12 20:04:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:37,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:37,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:37,135 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 20:04:37,136 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 20:04:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:37,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 20:04:37,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:37,195 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 20:04:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:37,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:37,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:37,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141151169] [2024-09-12 20:04:37,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:37,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849908930] [2024-09-12 20:04:37,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849908930] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:37,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:37,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:04:37,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037128948] [2024-09-12 20:04:37,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:37,229 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:04:37,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:37,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:04:37,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:04:37,230 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:37,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:37,324 INFO L93 Difference]: Finished difference Result 182 states and 186 transitions. [2024-09-12 20:04:37,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:04:37,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-09-12 20:04:37,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:37,325 INFO L225 Difference]: With dead ends: 182 [2024-09-12 20:04:37,325 INFO L226 Difference]: Without dead ends: 180 [2024-09-12 20:04:37,326 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:37,326 INFO L434 NwaCegarLoop]: 86 mSDtfsCounter, 95 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:37,326 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 434 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-09-12 20:04:37,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 135. [2024-09-12 20:04:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.6455696202531647) internal successors, (130), 125 states have internal predecessors, (130), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 143 transitions. [2024-09-12 20:04:37,344 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 143 transitions. Word has length 21 [2024-09-12 20:04:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:37,345 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 143 transitions. [2024-09-12 20:04:37,345 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:37,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 143 transitions. [2024-09-12 20:04:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 20:04:37,346 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:37,346 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:37,358 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 20:04:37,546 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 20:04:37,547 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:37,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:37,547 INFO L85 PathProgramCache]: Analyzing trace with hash -352305706, now seen corresponding path program 1 times [2024-09-12 20:04:37,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:37,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52369139] [2024-09-12 20:04:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:37,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:37,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607650269] [2024-09-12 20:04:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:37,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:37,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:37,571 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 20:04:37,572 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 20:04:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:37,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 20:04:37,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:37,642 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 20:04:37,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:04:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:37,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:37,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52369139] [2024-09-12 20:04:37,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607650269] [2024-09-12 20:04:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607650269] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:37,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:37,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:04:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410302949] [2024-09-12 20:04:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:37,762 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:04:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:04:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:37,762 INFO L87 Difference]: Start difference. First operand 135 states and 143 transitions. Second operand has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:38,026 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2024-09-12 20:04:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:04:38,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-09-12 20:04:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:38,027 INFO L225 Difference]: With dead ends: 148 [2024-09-12 20:04:38,027 INFO L226 Difference]: Without dead ends: 146 [2024-09-12 20:04:38,027 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:04:38,028 INFO L434 NwaCegarLoop]: 88 mSDtfsCounter, 76 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:38,028 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 564 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:04:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-12 20:04:38,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2024-09-12 20:04:38,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.620253164556962) internal successors, (128), 125 states have internal predecessors, (128), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 141 transitions. [2024-09-12 20:04:38,034 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 141 transitions. Word has length 23 [2024-09-12 20:04:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:38,035 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 141 transitions. [2024-09-12 20:04:38,035 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:38,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 141 transitions. [2024-09-12 20:04:38,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 20:04:38,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:38,036 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:38,051 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 20:04:38,236 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 20:04:38,236 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:38,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:38,237 INFO L85 PathProgramCache]: Analyzing trace with hash 736636504, now seen corresponding path program 1 times [2024-09-12 20:04:38,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:38,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077082641] [2024-09-12 20:04:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:38,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:38,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:38,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:38,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077082641] [2024-09-12 20:04:38,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077082641] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:38,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:38,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:04:38,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104848268] [2024-09-12 20:04:38,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:38,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:04:38,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:38,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:04:38,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:38,417 INFO L87 Difference]: Start difference. First operand 135 states and 141 transitions. Second operand has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:38,806 INFO L93 Difference]: Finished difference Result 178 states and 182 transitions. [2024-09-12 20:04:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:04:38,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-09-12 20:04:38,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:38,808 INFO L225 Difference]: With dead ends: 178 [2024-09-12 20:04:38,808 INFO L226 Difference]: Without dead ends: 177 [2024-09-12 20:04:38,808 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:04:38,809 INFO L434 NwaCegarLoop]: 86 mSDtfsCounter, 84 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:38,809 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 485 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:04:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-09-12 20:04:38,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2024-09-12 20:04:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.6075949367088607) internal successors, (127), 125 states have internal predecessors, (127), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:38,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 140 transitions. [2024-09-12 20:04:38,821 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 140 transitions. Word has length 25 [2024-09-12 20:04:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:38,821 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 140 transitions. [2024-09-12 20:04:38,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:38,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 140 transitions. [2024-09-12 20:04:38,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-12 20:04:38,822 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:38,822 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:38,822 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-12 20:04:38,823 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_26_to_34_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:38,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1360895260, now seen corresponding path program 1 times [2024-09-12 20:04:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:38,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710377577] [2024-09-12 20:04:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:38,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:38,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:38,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710377577] [2024-09-12 20:04:38,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710377577] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:38,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:38,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:38,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772116476] [2024-09-12 20:04:38,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:38,928 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:38,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:38,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:38,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:38,929 INFO L87 Difference]: Start difference. First operand 135 states and 140 transitions. Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:39,192 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2024-09-12 20:04:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:39,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-09-12 20:04:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:39,193 INFO L225 Difference]: With dead ends: 177 [2024-09-12 20:04:39,193 INFO L226 Difference]: Without dead ends: 176 [2024-09-12 20:04:39,194 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:04:39,194 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 78 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:39,194 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 487 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:04:39,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-12 20:04:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 135. [2024-09-12 20:04:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 79 states have (on average 1.5949367088607596) internal successors, (126), 125 states have internal predecessors, (126), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2024-09-12 20:04:39,201 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 26 [2024-09-12 20:04:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:39,201 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2024-09-12 20:04:39,201 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:39,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:39,202 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2024-09-12 20:04:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 20:04:39,202 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:39,202 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:39,202 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 20:04:39,203 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:39,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:39,203 INFO L85 PathProgramCache]: Analyzing trace with hash 551417484, now seen corresponding path program 1 times [2024-09-12 20:04:39,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:39,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875948299] [2024-09-12 20:04:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:39,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:39,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143318575] [2024-09-12 20:04:39,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:39,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:39,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:39,226 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 20:04:39,226 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 20:04:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:39,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 20:04:39,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:39,301 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 20:04:39,304 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 20:04:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:39,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:39,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:39,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875948299] [2024-09-12 20:04:39,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:39,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143318575] [2024-09-12 20:04:39,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143318575] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:39,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:39,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-09-12 20:04:39,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620932653] [2024-09-12 20:04:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:39,479 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:04:39,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:04:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:04:39,480 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:39,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:39,796 INFO L93 Difference]: Finished difference Result 150 states and 153 transitions. [2024-09-12 20:04:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 20:04:39,797 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-09-12 20:04:39,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:39,798 INFO L225 Difference]: With dead ends: 150 [2024-09-12 20:04:39,798 INFO L226 Difference]: Without dead ends: 148 [2024-09-12 20:04:39,798 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-09-12 20:04:39,798 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 70 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:39,799 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 726 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:04:39,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-09-12 20:04:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 139. [2024-09-12 20:04:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 82 states have (on average 1.5731707317073171) internal successors, (129), 128 states have internal predecessors, (129), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2024-09-12 20:04:39,806 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 30 [2024-09-12 20:04:39,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:39,806 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2024-09-12 20:04:39,806 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:04:39,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2024-09-12 20:04:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 20:04:39,807 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:39,807 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:39,823 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 20:04:40,011 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:40,012 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:40,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash 95731903, now seen corresponding path program 1 times [2024-09-12 20:04:40,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:40,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302512482] [2024-09-12 20:04:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:40,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:04:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:40,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:40,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302512482] [2024-09-12 20:04:40,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302512482] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:40,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:40,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:40,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10123704] [2024-09-12 20:04:40,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:40,123 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:40,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:40,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:40,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:40,124 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:40,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:40,186 INFO L93 Difference]: Finished difference Result 181 states and 184 transitions. [2024-09-12 20:04:40,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:40,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-09-12 20:04:40,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:40,188 INFO L225 Difference]: With dead ends: 181 [2024-09-12 20:04:40,188 INFO L226 Difference]: Without dead ends: 180 [2024-09-12 20:04:40,188 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:04:40,188 INFO L434 NwaCegarLoop]: 103 mSDtfsCounter, 69 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:40,189 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 604 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:04:40,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-09-12 20:04:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 140. [2024-09-12 20:04:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 83 states have (on average 1.5662650602409638) internal successors, (130), 129 states have internal predecessors, (130), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2024-09-12 20:04:40,196 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 34 [2024-09-12 20:04:40,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:40,196 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2024-09-12 20:04:40,196 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:40,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2024-09-12 20:04:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 20:04:40,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:40,197 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:40,197 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-12 20:04:40,197 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_26_to_34_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:40,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1327278177, now seen corresponding path program 1 times [2024-09-12 20:04:40,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:40,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015485663] [2024-09-12 20:04:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:40,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:04:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:40,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:40,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015485663] [2024-09-12 20:04:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015485663] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:40,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:40,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415380430] [2024-09-12 20:04:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:40,303 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:40,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:40,304 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:40,379 INFO L93 Difference]: Finished difference Result 140 states and 143 transitions. [2024-09-12 20:04:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:40,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-09-12 20:04:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:40,381 INFO L225 Difference]: With dead ends: 140 [2024-09-12 20:04:40,381 INFO L226 Difference]: Without dead ends: 139 [2024-09-12 20:04:40,382 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:04:40,382 INFO L434 NwaCegarLoop]: 101 mSDtfsCounter, 131 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:40,382 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 448 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:04:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-12 20:04:40,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-09-12 20:04:40,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 128 states have internal predecessors, (129), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:40,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2024-09-12 20:04:40,392 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 35 [2024-09-12 20:04:40,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:40,392 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2024-09-12 20:04:40,392 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:40,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:40,393 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2024-09-12 20:04:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-12 20:04:40,393 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:40,393 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:40,393 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-12 20:04:40,394 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_26_to_34_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:40,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:40,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1804049601, now seen corresponding path program 1 times [2024-09-12 20:04:40,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:40,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028039993] [2024-09-12 20:04:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:40,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:04:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:40,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:40,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028039993] [2024-09-12 20:04:40,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028039993] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:40,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:40,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:04:40,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172338290] [2024-09-12 20:04:40,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:40,484 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:04:40,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:40,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:04:40,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:04:40,484 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:40,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:40,562 INFO L93 Difference]: Finished difference Result 177 states and 180 transitions. [2024-09-12 20:04:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:04:40,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2024-09-12 20:04:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:40,563 INFO L225 Difference]: With dead ends: 177 [2024-09-12 20:04:40,563 INFO L226 Difference]: Without dead ends: 175 [2024-09-12 20:04:40,564 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:40,564 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 64 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:40,564 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 454 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:40,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-09-12 20:04:40,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 142. [2024-09-12 20:04:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 86 states have (on average 1.5348837209302326) internal successors, (132), 131 states have internal predecessors, (132), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 20:04:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2024-09-12 20:04:40,575 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 36 [2024-09-12 20:04:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:40,576 INFO L474 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2024-09-12 20:04:40,576 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:40,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2024-09-12 20:04:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 20:04:40,577 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:40,578 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:40,578 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-12 20:04:40,578 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:40,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash 90631179, now seen corresponding path program 1 times [2024-09-12 20:04:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:40,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383124873] [2024-09-12 20:04:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:40,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:04:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 20:04:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:40,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:40,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383124873] [2024-09-12 20:04:40,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383124873] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:40,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:40,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:04:40,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335297279] [2024-09-12 20:04:40,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:40,684 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:04:40,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:04:40,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:04:40,685 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:40,905 INFO L93 Difference]: Finished difference Result 176 states and 185 transitions. [2024-09-12 20:04:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:04:40,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2024-09-12 20:04:40,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:40,907 INFO L225 Difference]: With dead ends: 176 [2024-09-12 20:04:40,907 INFO L226 Difference]: Without dead ends: 174 [2024-09-12 20:04:40,907 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:04:40,907 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 90 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:40,907 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 270 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:04:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-09-12 20:04:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 147. [2024-09-12 20:04:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 90 states have (on average 1.511111111111111) internal successors, (136), 134 states have internal predecessors, (136), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 20:04:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 150 transitions. [2024-09-12 20:04:40,919 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 150 transitions. Word has length 37 [2024-09-12 20:04:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:40,919 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 150 transitions. [2024-09-12 20:04:40,920 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:40,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 150 transitions. [2024-09-12 20:04:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 20:04:40,921 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:40,921 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:40,921 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-09-12 20:04:40,921 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_26_to_34_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:40,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:40,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1475116861, now seen corresponding path program 1 times [2024-09-12 20:04:40,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:40,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352507037] [2024-09-12 20:04:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:40,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:40,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196811702] [2024-09-12 20:04:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:40,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:40,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:40,934 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 20:04:40,935 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 20:04:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:41,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 20:04:41,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:41,005 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 20:04:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:41,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:41,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:41,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352507037] [2024-09-12 20:04:41,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196811702] [2024-09-12 20:04:41,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196811702] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:41,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:41,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:04:41,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015952915] [2024-09-12 20:04:41,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:41,100 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:04:41,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:41,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:04:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:41,101 INFO L87 Difference]: Start difference. First operand 147 states and 150 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:41,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:41,229 INFO L93 Difference]: Finished difference Result 191 states and 196 transitions. [2024-09-12 20:04:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:04:41,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-09-12 20:04:41,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:41,231 INFO L225 Difference]: With dead ends: 191 [2024-09-12 20:04:41,231 INFO L226 Difference]: Without dead ends: 188 [2024-09-12 20:04:41,231 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:04:41,231 INFO L434 NwaCegarLoop]: 85 mSDtfsCounter, 102 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:41,232 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 369 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:41,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-09-12 20:04:41,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 167. [2024-09-12 20:04:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 153 states have internal predecessors, (171), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 20:04:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 186 transitions. [2024-09-12 20:04:41,246 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 186 transitions. Word has length 38 [2024-09-12 20:04:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:41,247 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 186 transitions. [2024-09-12 20:04:41,247 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:41,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 186 transitions. [2024-09-12 20:04:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 20:04:41,248 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:41,248 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:41,261 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 20:04:41,452 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 20:04:41,453 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:41,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1197218253, now seen corresponding path program 1 times [2024-09-12 20:04:41,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:41,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567927313] [2024-09-12 20:04:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:41,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:41,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:41,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:04:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:41,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 20:04:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:41,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567927313] [2024-09-12 20:04:41,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567927313] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:41,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:41,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:04:41,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089576843] [2024-09-12 20:04:41,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:41,536 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:04:41,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:41,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:04:41,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:04:41,537 INFO L87 Difference]: Start difference. First operand 167 states and 186 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:41,782 INFO L93 Difference]: Finished difference Result 181 states and 186 transitions. [2024-09-12 20:04:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:41,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-09-12 20:04:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:41,784 INFO L225 Difference]: With dead ends: 181 [2024-09-12 20:04:41,784 INFO L226 Difference]: Without dead ends: 175 [2024-09-12 20:04:41,784 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:41,785 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 123 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:41,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 242 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:04:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-09-12 20:04:41,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 167. [2024-09-12 20:04:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.5137614678899083) internal successors, (165), 153 states have internal predecessors, (165), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 20:04:41,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 180 transitions. [2024-09-12 20:04:41,798 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 180 transitions. Word has length 39 [2024-09-12 20:04:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:41,798 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 180 transitions. [2024-09-12 20:04:41,798 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:41,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 180 transitions. [2024-09-12 20:04:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 20:04:41,799 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:41,799 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:41,799 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-09-12 20:04:41,799 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:41,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:41,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1516017699, now seen corresponding path program 1 times [2024-09-12 20:04:41,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:41,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354065303] [2024-09-12 20:04:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:41,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:41,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374674207] [2024-09-12 20:04:41,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:41,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:41,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:41,812 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 20:04:41,813 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 20:04:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:41,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 20:04:41,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:41,890 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 20:04:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:41,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:41,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:41,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354065303] [2024-09-12 20:04:41,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374674207] [2024-09-12 20:04:41,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374674207] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:41,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:41,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:04:41,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307345105] [2024-09-12 20:04:41,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:41,967 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:04:41,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:41,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:04:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:41,968 INFO L87 Difference]: Start difference. First operand 167 states and 180 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:42,074 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2024-09-12 20:04:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:04:42,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-09-12 20:04:42,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:42,076 INFO L225 Difference]: With dead ends: 183 [2024-09-12 20:04:42,076 INFO L226 Difference]: Without dead ends: 182 [2024-09-12 20:04:42,076 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:04:42,076 INFO L434 NwaCegarLoop]: 86 mSDtfsCounter, 89 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:42,077 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 387 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:42,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-09-12 20:04:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2024-09-12 20:04:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.509090909090909) internal successors, (166), 154 states have internal predecessors, (166), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 20:04:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 181 transitions. [2024-09-12 20:04:42,094 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 181 transitions. Word has length 39 [2024-09-12 20:04:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:42,094 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 181 transitions. [2024-09-12 20:04:42,094 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:42,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 181 transitions. [2024-09-12 20:04:42,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 20:04:42,095 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:42,095 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:42,109 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 20:04:42,295 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 20:04:42,296 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_26_to_34_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:42,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:42,296 INFO L85 PathProgramCache]: Analyzing trace with hash -248091451, now seen corresponding path program 1 times [2024-09-12 20:04:42,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:42,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735351621] [2024-09-12 20:04:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:42,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:42,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:42,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:04:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:42,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:42,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735351621] [2024-09-12 20:04:42,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735351621] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:42,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:42,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:42,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084559823] [2024-09-12 20:04:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:42,458 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:42,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:42,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:42,459 INFO L87 Difference]: Start difference. First operand 168 states and 181 transitions. Second operand has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:42,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:42,619 INFO L93 Difference]: Finished difference Result 172 states and 185 transitions. [2024-09-12 20:04:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:42,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-09-12 20:04:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:42,620 INFO L225 Difference]: With dead ends: 172 [2024-09-12 20:04:42,620 INFO L226 Difference]: Without dead ends: 171 [2024-09-12 20:04:42,621 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:04:42,621 INFO L434 NwaCegarLoop]: 101 mSDtfsCounter, 40 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:42,621 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 521 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-09-12 20:04:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2024-09-12 20:04:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.5045045045045045) internal successors, (167), 155 states have internal predecessors, (167), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 20:04:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 182 transitions. [2024-09-12 20:04:42,642 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 182 transitions. Word has length 40 [2024-09-12 20:04:42,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:42,642 INFO L474 AbstractCegarLoop]: Abstraction has 169 states and 182 transitions. [2024-09-12 20:04:42,642 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:42,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:42,643 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 182 transitions. [2024-09-12 20:04:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 20:04:42,643 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:42,643 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:42,643 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-09-12 20:04:42,643 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_26_to_34_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:42,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:42,644 INFO L85 PathProgramCache]: Analyzing trace with hash 899099749, now seen corresponding path program 1 times [2024-09-12 20:04:42,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:42,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727504441] [2024-09-12 20:04:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:42,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:42,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:42,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:04:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:42,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:42,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727504441] [2024-09-12 20:04:42,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727504441] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:42,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:42,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:04:42,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298201893] [2024-09-12 20:04:42,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:42,775 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:04:42,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:42,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:04:42,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:04:42,775 INFO L87 Difference]: Start difference. First operand 169 states and 182 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:42,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:42,912 INFO L93 Difference]: Finished difference Result 171 states and 184 transitions. [2024-09-12 20:04:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:04:42,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-09-12 20:04:42,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:42,913 INFO L225 Difference]: With dead ends: 171 [2024-09-12 20:04:42,913 INFO L226 Difference]: Without dead ends: 170 [2024-09-12 20:04:42,913 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:42,914 INFO L434 NwaCegarLoop]: 103 mSDtfsCounter, 35 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:42,914 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 500 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:04:42,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-12 20:04:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-09-12 20:04:42,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.5) internal successors, (168), 156 states have internal predecessors, (168), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 20:04:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 183 transitions. [2024-09-12 20:04:42,944 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 183 transitions. Word has length 41 [2024-09-12 20:04:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:42,945 INFO L474 AbstractCegarLoop]: Abstraction has 170 states and 183 transitions. [2024-09-12 20:04:42,945 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:42,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 183 transitions. [2024-09-12 20:04:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 20:04:42,946 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:42,946 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:42,946 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-09-12 20:04:42,946 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:42,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:42,946 INFO L85 PathProgramCache]: Analyzing trace with hash 66887215, now seen corresponding path program 1 times [2024-09-12 20:04:42,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:42,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134987087] [2024-09-12 20:04:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:42,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:42,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728694314] [2024-09-12 20:04:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:42,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:42,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:42,968 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 20:04:42,969 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 20:04:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:43,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-12 20:04:43,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:43,084 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 20:04:43,086 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 20:04:43,272 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 20:04:43,330 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 17 treesize of output 9 [2024-09-12 20:04:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:43,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:43,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134987087] [2024-09-12 20:04:43,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728694314] [2024-09-12 20:04:43,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728694314] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:43,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:43,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-09-12 20:04:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521510795] [2024-09-12 20:04:43,599 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:43,599 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 20:04:43,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:43,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 20:04:43,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:04:43,600 INFO L87 Difference]: Start difference. First operand 170 states and 183 transitions. Second operand has 12 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:44,135 INFO L93 Difference]: Finished difference Result 243 states and 248 transitions. [2024-09-12 20:04:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:04:44,136 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-09-12 20:04:44,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:44,137 INFO L225 Difference]: With dead ends: 243 [2024-09-12 20:04:44,137 INFO L226 Difference]: Without dead ends: 242 [2024-09-12 20:04:44,137 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2024-09-12 20:04:44,138 INFO L434 NwaCegarLoop]: 101 mSDtfsCounter, 201 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:44,138 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 704 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:04:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-09-12 20:04:44,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 198. [2024-09-12 20:04:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 136 states have (on average 1.5441176470588236) internal successors, (210), 181 states have internal predecessors, (210), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-12 20:04:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 231 transitions. [2024-09-12 20:04:44,163 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 231 transitions. Word has length 45 [2024-09-12 20:04:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:44,163 INFO L474 AbstractCegarLoop]: Abstraction has 198 states and 231 transitions. [2024-09-12 20:04:44,164 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:44,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 231 transitions. [2024-09-12 20:04:44,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 20:04:44,164 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:44,164 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:44,177 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 20:04:44,365 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:44,365 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:44,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1898525459, now seen corresponding path program 1 times [2024-09-12 20:04:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452449831] [2024-09-12 20:04:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:44,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:44,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:04:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:44,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 20:04:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:44,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:44,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452449831] [2024-09-12 20:04:44,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452449831] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:44,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:44,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:44,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924324156] [2024-09-12 20:04:44,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:44,698 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:44,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:44,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:44,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:44,698 INFO L87 Difference]: Start difference. First operand 198 states and 231 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:45,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:45,017 INFO L93 Difference]: Finished difference Result 203 states and 231 transitions. [2024-09-12 20:04:45,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:45,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-09-12 20:04:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:45,018 INFO L225 Difference]: With dead ends: 203 [2024-09-12 20:04:45,018 INFO L226 Difference]: Without dead ends: 202 [2024-09-12 20:04:45,019 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:45,019 INFO L434 NwaCegarLoop]: 76 mSDtfsCounter, 90 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:45,019 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 274 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:04:45,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-09-12 20:04:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 198. [2024-09-12 20:04:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 136 states have (on average 1.536764705882353) internal successors, (209), 181 states have internal predecessors, (209), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-12 20:04:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 230 transitions. [2024-09-12 20:04:45,046 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 230 transitions. Word has length 45 [2024-09-12 20:04:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:45,046 INFO L474 AbstractCegarLoop]: Abstraction has 198 states and 230 transitions. [2024-09-12 20:04:45,046 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:45,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 230 transitions. [2024-09-12 20:04:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 20:04:45,047 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:45,047 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 20:04:45,047 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-09-12 20:04:45,047 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_26_to_34_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:45,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:45,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2073503749, now seen corresponding path program 1 times [2024-09-12 20:04:45,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:45,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713954120] [2024-09-12 20:04:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:45,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:45,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783845358] [2024-09-12 20:04:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:45,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:45,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:45,069 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 20:04:45,078 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 20:04:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:45,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-12 20:04:45,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:45,163 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 20:04:45,166 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 20:04:45,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:04:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:45,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:45,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:45,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713954120] [2024-09-12 20:04:45,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:45,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783845358] [2024-09-12 20:04:45,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783845358] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:04:45,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:04:45,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2024-09-12 20:04:45,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81949547] [2024-09-12 20:04:45,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:45,580 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 20:04:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 20:04:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-09-12 20:04:45,581 INFO L87 Difference]: Start difference. First operand 198 states and 230 transitions. Second operand has 21 states, 18 states have (on average 4.277777777777778) internal successors, (77), 17 states have internal predecessors, (77), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:46,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:46,742 INFO L93 Difference]: Finished difference Result 301 states and 310 transitions. [2024-09-12 20:04:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 20:04:46,743 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.277777777777778) internal successors, (77), 17 states have internal predecessors, (77), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2024-09-12 20:04:46,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:46,744 INFO L225 Difference]: With dead ends: 301 [2024-09-12 20:04:46,744 INFO L226 Difference]: Without dead ends: 296 [2024-09-12 20:04:46,744 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 20:04:46,745 INFO L434 NwaCegarLoop]: 86 mSDtfsCounter, 525 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:46,745 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 972 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 20:04:46,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-12 20:04:46,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 234. [2024-09-12 20:04:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 168 states have (on average 1.5535714285714286) internal successors, (261), 214 states have internal predecessors, (261), 12 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-12 20:04:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 288 transitions. [2024-09-12 20:04:46,779 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 288 transitions. Word has length 46 [2024-09-12 20:04:46,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:46,779 INFO L474 AbstractCegarLoop]: Abstraction has 234 states and 288 transitions. [2024-09-12 20:04:46,779 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.277777777777778) internal successors, (77), 17 states have internal predecessors, (77), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:46,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 288 transitions. [2024-09-12 20:04:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 20:04:46,780 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:46,780 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:46,793 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 20:04:46,980 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:46,981 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:46,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:46,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1275252863, now seen corresponding path program 1 times [2024-09-12 20:04:46,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:46,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283519811] [2024-09-12 20:04:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:46,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:47,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319718472] [2024-09-12 20:04:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:47,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:47,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:47,008 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 20:04:47,009 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 20:04:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:47,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 20:04:47,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:47,084 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 20:04:47,087 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 20:04:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:47,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:47,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:47,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283519811] [2024-09-12 20:04:47,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:47,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319718472] [2024-09-12 20:04:47,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319718472] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:47,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:47,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:04:47,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385711420] [2024-09-12 20:04:47,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:47,176 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:04:47,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:04:47,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:04:47,177 INFO L87 Difference]: Start difference. First operand 234 states and 288 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:47,394 INFO L93 Difference]: Finished difference Result 239 states and 288 transitions. [2024-09-12 20:04:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:04:47,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2024-09-12 20:04:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:47,396 INFO L225 Difference]: With dead ends: 239 [2024-09-12 20:04:47,396 INFO L226 Difference]: Without dead ends: 238 [2024-09-12 20:04:47,396 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:47,397 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 58 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:47,397 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 308 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:04:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-09-12 20:04:47,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2024-09-12 20:04:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 168 states have (on average 1.5476190476190477) internal successors, (260), 214 states have internal predecessors, (260), 12 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-12 20:04:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2024-09-12 20:04:47,429 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 46 [2024-09-12 20:04:47,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:47,429 INFO L474 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2024-09-12 20:04:47,429 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:47,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:47,429 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2024-09-12 20:04:47,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 20:04:47,430 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:47,430 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] [2024-09-12 20:04:47,442 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 20:04:47,630 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 20:04:47,630 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:47,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:47,631 INFO L85 PathProgramCache]: Analyzing trace with hash -145893135, now seen corresponding path program 1 times [2024-09-12 20:04:47,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:47,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171359218] [2024-09-12 20:04:47,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:47,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:47,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:47,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:04:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:47,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:47,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171359218] [2024-09-12 20:04:47,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171359218] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:47,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735865505] [2024-09-12 20:04:47,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:47,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:47,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:47,813 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 20:04:47,814 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 20:04:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:47,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 20:04:47,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:47,902 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 20:04:47,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-09-12 20:04:47,993 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 20:04:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:47,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:48,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735865505] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:04:48,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:04:48,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 17 [2024-09-12 20:04:48,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824804728] [2024-09-12 20:04:48,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:48,111 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 20:04:48,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:48,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 20:04:48,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:04:48,111 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand has 18 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:04:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:48,596 INFO L93 Difference]: Finished difference Result 262 states and 291 transitions. [2024-09-12 20:04:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 20:04:48,596 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2024-09-12 20:04:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:48,598 INFO L225 Difference]: With dead ends: 262 [2024-09-12 20:04:48,598 INFO L226 Difference]: Without dead ends: 260 [2024-09-12 20:04:48,598 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2024-09-12 20:04:48,598 INFO L434 NwaCegarLoop]: 82 mSDtfsCounter, 408 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:48,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 564 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:04:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-09-12 20:04:48,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 234. [2024-09-12 20:04:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 169 states have (on average 1.5207100591715976) internal successors, (257), 213 states have internal predecessors, (257), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:04:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 286 transitions. [2024-09-12 20:04:48,635 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 286 transitions. Word has length 47 [2024-09-12 20:04:48,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:48,635 INFO L474 AbstractCegarLoop]: Abstraction has 234 states and 286 transitions. [2024-09-12 20:04:48,636 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:04:48,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 286 transitions. [2024-09-12 20:04:48,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 20:04:48,636 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:48,636 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:48,649 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 20:04:48,836 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 20:04:48,837 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:48,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -878133035, now seen corresponding path program 1 times [2024-09-12 20:04:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:48,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672038422] [2024-09-12 20:04:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:48,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:48,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:48,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:04:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:48,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 20:04:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:48,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672038422] [2024-09-12 20:04:48,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672038422] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886742684] [2024-09-12 20:04:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:48,940 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:48,940 INFO L87 Difference]: Start difference. First operand 234 states and 286 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:49,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:49,085 INFO L93 Difference]: Finished difference Result 240 states and 286 transitions. [2024-09-12 20:04:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:04:49,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2024-09-12 20:04:49,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:49,086 INFO L225 Difference]: With dead ends: 240 [2024-09-12 20:04:49,087 INFO L226 Difference]: Without dead ends: 239 [2024-09-12 20:04:49,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:49,087 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 106 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:49,088 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 229 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-09-12 20:04:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 234. [2024-09-12 20:04:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 169 states have (on average 1.514792899408284) internal successors, (256), 213 states have internal predecessors, (256), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:04:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 285 transitions. [2024-09-12 20:04:49,132 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 285 transitions. Word has length 47 [2024-09-12 20:04:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:49,133 INFO L474 AbstractCegarLoop]: Abstraction has 234 states and 285 transitions. [2024-09-12 20:04:49,133 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:49,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 285 transitions. [2024-09-12 20:04:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 20:04:49,134 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:49,134 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:49,134 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-09-12 20:04:49,134 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:49,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:49,134 INFO L85 PathProgramCache]: Analyzing trace with hash -227719801, now seen corresponding path program 1 times [2024-09-12 20:04:49,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:49,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025631540] [2024-09-12 20:04:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:49,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:49,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:49,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:04:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:49,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:49,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025631540] [2024-09-12 20:04:49,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025631540] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:49,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678642284] [2024-09-12 20:04:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:49,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:49,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:49,292 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 20:04:49,293 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 20:04:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:49,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 20:04:49,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:49,389 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 20:04:49,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-09-12 20:04:49,470 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 20:04:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:49,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:49,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678642284] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:49,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:04:49,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 10] total 17 [2024-09-12 20:04:49,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569884812] [2024-09-12 20:04:49,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:49,589 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:04:49,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:04:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:04:49,590 INFO L87 Difference]: Start difference. First operand 234 states and 285 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:49,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:49,933 INFO L93 Difference]: Finished difference Result 234 states and 285 transitions. [2024-09-12 20:04:49,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 20:04:49,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-09-12 20:04:49,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:49,935 INFO L225 Difference]: With dead ends: 234 [2024-09-12 20:04:49,935 INFO L226 Difference]: Without dead ends: 232 [2024-09-12 20:04:49,936 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2024-09-12 20:04:49,936 INFO L434 NwaCegarLoop]: 94 mSDtfsCounter, 105 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:49,936 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 488 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:04:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-12 20:04:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-12 20:04:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.4911242603550297) internal successors, (252), 211 states have internal predecessors, (252), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:04:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 281 transitions. [2024-09-12 20:04:49,979 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 281 transitions. Word has length 48 [2024-09-12 20:04:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:49,979 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 281 transitions. [2024-09-12 20:04:49,979 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:49,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 281 transitions. [2024-09-12 20:04:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 20:04:49,980 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:49,980 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:49,992 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 20:04:50,180 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 20:04:50,181 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:50,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:50,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1452320253, now seen corresponding path program 1 times [2024-09-12 20:04:50,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:50,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003830235] [2024-09-12 20:04:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:50,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:50,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:50,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:04:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:50,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 20:04:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:50,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:50,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003830235] [2024-09-12 20:04:50,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003830235] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:50,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:50,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:04:50,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552756671] [2024-09-12 20:04:50,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:50,273 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:04:50,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:04:50,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:04:50,274 INFO L87 Difference]: Start difference. First operand 232 states and 281 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:50,421 INFO L93 Difference]: Finished difference Result 237 states and 281 transitions. [2024-09-12 20:04:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:04:50,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2024-09-12 20:04:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:50,423 INFO L225 Difference]: With dead ends: 237 [2024-09-12 20:04:50,423 INFO L226 Difference]: Without dead ends: 236 [2024-09-12 20:04:50,423 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:04:50,424 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 75 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:50,424 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 244 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:50,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-09-12 20:04:50,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2024-09-12 20:04:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.485207100591716) internal successors, (251), 211 states have internal predecessors, (251), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:04:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 280 transitions. [2024-09-12 20:04:50,468 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 280 transitions. Word has length 48 [2024-09-12 20:04:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:50,469 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 280 transitions. [2024-09-12 20:04:50,469 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:50,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 280 transitions. [2024-09-12 20:04:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 20:04:50,469 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:50,469 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:50,469 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-09-12 20:04:50,469 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:50,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1530620851, now seen corresponding path program 1 times [2024-09-12 20:04:50,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:50,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474648222] [2024-09-12 20:04:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:50,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:50,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154600681] [2024-09-12 20:04:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:50,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:50,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:50,488 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 20:04:50,488 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 20:04:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:50,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-12 20:04:50,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:50,578 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 20:04:50,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:04:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:50,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:51,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474648222] [2024-09-12 20:04:51,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:51,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154600681] [2024-09-12 20:04:51,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154600681] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:51,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:51,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-09-12 20:04:51,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240287452] [2024-09-12 20:04:51,196 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:51,196 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 20:04:51,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:51,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 20:04:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:04:51,197 INFO L87 Difference]: Start difference. First operand 232 states and 280 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:51,573 INFO L93 Difference]: Finished difference Result 255 states and 281 transitions. [2024-09-12 20:04:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 20:04:51,573 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2024-09-12 20:04:51,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:51,574 INFO L225 Difference]: With dead ends: 255 [2024-09-12 20:04:51,575 INFO L226 Difference]: Without dead ends: 254 [2024-09-12 20:04:51,575 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2024-09-12 20:04:51,579 INFO L434 NwaCegarLoop]: 82 mSDtfsCounter, 192 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:51,579 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 666 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:04:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-09-12 20:04:51,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 232. [2024-09-12 20:04:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.4792899408284024) internal successors, (250), 211 states have internal predecessors, (250), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:04:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 279 transitions. [2024-09-12 20:04:51,617 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 279 transitions. Word has length 49 [2024-09-12 20:04:51,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:51,618 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 279 transitions. [2024-09-12 20:04:51,618 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:51,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 279 transitions. [2024-09-12 20:04:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 20:04:51,618 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:51,618 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:51,631 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 20:04:51,819 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 20:04:51,819 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:51,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2072254825, now seen corresponding path program 1 times [2024-09-12 20:04:51,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:51,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299616560] [2024-09-12 20:04:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:51,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712405498] [2024-09-12 20:04:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:51,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:51,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:51,831 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 20:04:51,832 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 20:04:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:51,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 20:04:51,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:51,924 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 20:04:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:51,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:51,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:51,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299616560] [2024-09-12 20:04:51,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:51,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712405498] [2024-09-12 20:04:51,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712405498] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:51,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:04:51,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 20:04:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710375583] [2024-09-12 20:04:51,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:51,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 20:04:51,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:51,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 20:04:51,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 20:04:51,963 INFO L87 Difference]: Start difference. First operand 232 states and 279 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:52,073 INFO L93 Difference]: Finished difference Result 236 states and 279 transitions. [2024-09-12 20:04:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:04:52,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2024-09-12 20:04:52,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:52,076 INFO L225 Difference]: With dead ends: 236 [2024-09-12 20:04:52,076 INFO L226 Difference]: Without dead ends: 234 [2024-09-12 20:04:52,077 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:04:52,077 INFO L434 NwaCegarLoop]: 74 mSDtfsCounter, 41 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:52,077 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 249 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:04:52,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-09-12 20:04:52,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 232. [2024-09-12 20:04:52,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.467455621301775) internal successors, (248), 211 states have internal predecessors, (248), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:04:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 277 transitions. [2024-09-12 20:04:52,115 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 277 transitions. Word has length 49 [2024-09-12 20:04:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:52,115 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 277 transitions. [2024-09-12 20:04:52,115 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:04:52,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:52,116 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 277 transitions. [2024-09-12 20:04:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 20:04:52,116 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:52,116 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:52,129 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-12 20:04:52,320 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:52,321 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:52,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:52,321 INFO L85 PathProgramCache]: Analyzing trace with hash 204606217, now seen corresponding path program 1 times [2024-09-12 20:04:52,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:52,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192606337] [2024-09-12 20:04:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:52,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:52,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600933490] [2024-09-12 20:04:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:52,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:52,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:52,337 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 20:04:52,338 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 20:04:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:52,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 20:04:52,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:52,423 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 20:04:52,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:04:52,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:52,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:53,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:53,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192606337] [2024-09-12 20:04:53,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:53,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600933490] [2024-09-12 20:04:53,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600933490] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:53,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:53,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-12 20:04:53,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059627434] [2024-09-12 20:04:53,400 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:53,400 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:04:53,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:04:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:04:53,400 INFO L87 Difference]: Start difference. First operand 232 states and 277 transitions. Second operand has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:53,818 INFO L93 Difference]: Finished difference Result 252 states and 278 transitions. [2024-09-12 20:04:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:04:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-09-12 20:04:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:53,820 INFO L225 Difference]: With dead ends: 252 [2024-09-12 20:04:53,820 INFO L226 Difference]: Without dead ends: 251 [2024-09-12 20:04:53,820 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-09-12 20:04:53,821 INFO L434 NwaCegarLoop]: 91 mSDtfsCounter, 169 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:53,821 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 778 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:04:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-09-12 20:04:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 232. [2024-09-12 20:04:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.4615384615384615) internal successors, (247), 211 states have internal predecessors, (247), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:04:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 276 transitions. [2024-09-12 20:04:53,860 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 276 transitions. Word has length 50 [2024-09-12 20:04:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:53,860 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 276 transitions. [2024-09-12 20:04:53,860 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:04:53,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:53,860 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 276 transitions. [2024-09-12 20:04:53,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-12 20:04:53,861 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:53,861 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:53,873 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-12 20:04:54,061 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:54,061 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:04:54,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:54,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2047825525, now seen corresponding path program 1 times [2024-09-12 20:04:54,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:54,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211636449] [2024-09-12 20:04:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:54,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:54,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62441675] [2024-09-12 20:04:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:54,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:54,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:54,076 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 20:04:54,077 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 20:04:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:54,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-12 20:04:54,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:54,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:04:54,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:04:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:04:54,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:02,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:02,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211636449] [2024-09-12 20:05:02,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:02,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62441675] [2024-09-12 20:05:02,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62441675] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:02,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:05:02,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-09-12 20:05:02,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206659498] [2024-09-12 20:05:02,940 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:02,940 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 20:05:02,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:02,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 20:05:02,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=385, Unknown=2, NotChecked=0, Total=462 [2024-09-12 20:05:02,940 INFO L87 Difference]: Start difference. First operand 232 states and 276 transitions. Second operand has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:05:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:03,240 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2024-09-12 20:05:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 20:05:03,240 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-09-12 20:05:03,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:03,241 INFO L225 Difference]: With dead ends: 251 [2024-09-12 20:05:03,241 INFO L226 Difference]: Without dead ends: 250 [2024-09-12 20:05:03,242 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=146, Invalid=608, Unknown=2, NotChecked=0, Total=756 [2024-09-12 20:05:03,242 INFO L434 NwaCegarLoop]: 92 mSDtfsCounter, 195 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:03,242 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 723 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:05:03,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-09-12 20:05:03,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2024-09-12 20:05:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.455621301775148) internal successors, (246), 211 states have internal predecessors, (246), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:05:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 275 transitions. [2024-09-12 20:05:03,283 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 275 transitions. Word has length 51 [2024-09-12 20:05:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:03,283 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 275 transitions. [2024-09-12 20:05:03,283 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:05:03,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 275 transitions. [2024-09-12 20:05:03,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-12 20:05:03,283 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:03,283 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:03,298 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-12 20:05:03,484 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 20:05:03,484 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:03,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:03,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1427940441, now seen corresponding path program 1 times [2024-09-12 20:05:03,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:03,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443717995] [2024-09-12 20:05:03,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:03,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:03,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653614994] [2024-09-12 20:05:03,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:03,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:03,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:03,499 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 20:05:03,500 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 20:05:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:03,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 20:05:03,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:03,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:03,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:03,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:03,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:03,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443717995] [2024-09-12 20:05:03,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:03,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653614994] [2024-09-12 20:05:03,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653614994] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:03,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:03,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:03,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14982407] [2024-09-12 20:05:03,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:03,738 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:03,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:03,738 INFO L87 Difference]: Start difference. First operand 232 states and 275 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:03,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:03,935 INFO L93 Difference]: Finished difference Result 234 states and 275 transitions. [2024-09-12 20:05:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:05:03,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2024-09-12 20:05:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:03,936 INFO L225 Difference]: With dead ends: 234 [2024-09-12 20:05:03,936 INFO L226 Difference]: Without dead ends: 232 [2024-09-12 20:05:03,937 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:03,937 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 35 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:03,937 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 348 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:05:03,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-12 20:05:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-12 20:05:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.4437869822485208) internal successors, (244), 211 states have internal predecessors, (244), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:05:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 273 transitions. [2024-09-12 20:05:03,976 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 273 transitions. Word has length 51 [2024-09-12 20:05:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:03,977 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 273 transitions. [2024-09-12 20:05:03,977 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:03,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:03,977 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 273 transitions. [2024-09-12 20:05:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-12 20:05:03,977 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:03,977 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 20:05:03,990 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 20:05:04,181 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:04,182 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:04,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:04,182 INFO L85 PathProgramCache]: Analyzing trace with hash -941918069, now seen corresponding path program 1 times [2024-09-12 20:05:04,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:04,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723363137] [2024-09-12 20:05:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:04,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:04,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508849911] [2024-09-12 20:05:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:04,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:04,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:04,200 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 20:05:04,202 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 20:05:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:04,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-12 20:05:04,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:04,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:04,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:05:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:04,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:06,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:06,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723363137] [2024-09-12 20:05:06,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:06,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508849911] [2024-09-12 20:05:06,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508849911] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:06,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:05:06,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-09-12 20:05:06,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572985179] [2024-09-12 20:05:06,150 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:06,150 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 20:05:06,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 20:05:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-09-12 20:05:06,151 INFO L87 Difference]: Start difference. First operand 232 states and 273 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:05:06,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:06,719 INFO L93 Difference]: Finished difference Result 248 states and 274 transitions. [2024-09-12 20:05:06,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 20:05:06,719 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2024-09-12 20:05:06,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:06,720 INFO L225 Difference]: With dead ends: 248 [2024-09-12 20:05:06,720 INFO L226 Difference]: Without dead ends: 247 [2024-09-12 20:05:06,721 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-09-12 20:05:06,721 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 138 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:06,721 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 837 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:05:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-12 20:05:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 232. [2024-09-12 20:05:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.4378698224852071) internal successors, (243), 211 states have internal predecessors, (243), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:05:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 272 transitions. [2024-09-12 20:05:06,771 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 272 transitions. Word has length 52 [2024-09-12 20:05:06,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:06,771 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 272 transitions. [2024-09-12 20:05:06,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:05:06,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:06,771 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 272 transitions. [2024-09-12 20:05:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 20:05:06,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:06,772 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:06,785 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-12 20:05:06,976 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:06,976 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:06,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:06,977 INFO L85 PathProgramCache]: Analyzing trace with hash 865311031, now seen corresponding path program 1 times [2024-09-12 20:05:06,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:06,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321788581] [2024-09-12 20:05:06,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:06,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:06,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681118062] [2024-09-12 20:05:06,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:06,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:06,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:06,995 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 20:05:06,997 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 20:05:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:07,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 20:05:07,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:07,095 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 20:05:07,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:07,249 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 20:05:07,291 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 20:05:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:07,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:14,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:14,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321788581] [2024-09-12 20:05:14,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:14,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681118062] [2024-09-12 20:05:14,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681118062] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:14,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:05:14,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-12 20:05:14,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671646338] [2024-09-12 20:05:14,981 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:14,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:05:14,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:14,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:05:14,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=357, Unknown=1, NotChecked=0, Total=420 [2024-09-12 20:05:14,982 INFO L87 Difference]: Start difference. First operand 232 states and 272 transitions. Second operand has 13 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:05:17,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:17,233 INFO L93 Difference]: Finished difference Result 249 states and 273 transitions. [2024-09-12 20:05:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:05:17,233 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2024-09-12 20:05:17,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:17,234 INFO L225 Difference]: With dead ends: 249 [2024-09-12 20:05:17,234 INFO L226 Difference]: Without dead ends: 248 [2024-09-12 20:05:17,235 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=108, Invalid=541, Unknown=1, NotChecked=0, Total=650 [2024-09-12 20:05:17,235 INFO L434 NwaCegarLoop]: 99 mSDtfsCounter, 155 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:17,235 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 798 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-12 20:05:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-12 20:05:17,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 232. [2024-09-12 20:05:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.4319526627218935) internal successors, (242), 211 states have internal predecessors, (242), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:05:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 271 transitions. [2024-09-12 20:05:17,279 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 271 transitions. Word has length 53 [2024-09-12 20:05:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:17,279 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 271 transitions. [2024-09-12 20:05:17,279 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:05:17,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 271 transitions. [2024-09-12 20:05:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 20:05:17,280 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:17,280 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:17,294 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-12 20:05:17,480 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 20:05:17,480 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:17,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:17,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2138768869, now seen corresponding path program 1 times [2024-09-12 20:05:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:17,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48468878] [2024-09-12 20:05:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:17,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:17,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:17,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:17,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 20:05:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:17,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:17,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48468878] [2024-09-12 20:05:17,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48468878] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:17,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:17,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:05:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040596275] [2024-09-12 20:05:17,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:17,621 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:05:17,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:05:17,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:17,622 INFO L87 Difference]: Start difference. First operand 232 states and 271 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:17,967 INFO L93 Difference]: Finished difference Result 233 states and 271 transitions. [2024-09-12 20:05:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:05:17,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 53 [2024-09-12 20:05:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:17,969 INFO L225 Difference]: With dead ends: 233 [2024-09-12 20:05:17,969 INFO L226 Difference]: Without dead ends: 232 [2024-09-12 20:05:17,969 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:17,969 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 77 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:17,969 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 275 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:05:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-12 20:05:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-12 20:05:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.4260355029585798) internal successors, (241), 211 states have internal predecessors, (241), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:05:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 270 transitions. [2024-09-12 20:05:18,019 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 270 transitions. Word has length 53 [2024-09-12 20:05:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:18,019 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 270 transitions. [2024-09-12 20:05:18,019 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:18,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:18,020 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 270 transitions. [2024-09-12 20:05:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 20:05:18,020 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:18,020 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:18,020 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-09-12 20:05:18,020 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:18,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1054838285, now seen corresponding path program 1 times [2024-09-12 20:05:18,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:18,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710229174] [2024-09-12 20:05:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:18,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:18,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513309493] [2024-09-12 20:05:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:18,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:18,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:18,036 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 20:05:18,037 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 20:05:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:18,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-09-12 20:05:18,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:18,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:18,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:18,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:05:18,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:05:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:18,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:18,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:18,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710229174] [2024-09-12 20:05:18,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:18,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513309493] [2024-09-12 20:05:18,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513309493] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:05:18,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:05:18,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2024-09-12 20:05:18,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984034971] [2024-09-12 20:05:18,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:18,815 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 20:05:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:18,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 20:05:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-09-12 20:05:18,816 INFO L87 Difference]: Start difference. First operand 232 states and 270 transitions. Second operand has 27 states, 24 states have (on average 3.875) internal successors, (93), 23 states have internal predecessors, (93), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:24,315 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 [] [2024-09-12 20:05:28,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:05:32,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:05:36,722 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 [] [2024-09-12 20:05:36,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:36,927 INFO L93 Difference]: Finished difference Result 266 states and 276 transitions. [2024-09-12 20:05:36,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 20:05:36,928 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.875) internal successors, (93), 23 states have internal predecessors, (93), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2024-09-12 20:05:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:36,929 INFO L225 Difference]: With dead ends: 266 [2024-09-12 20:05:36,929 INFO L226 Difference]: Without dead ends: 265 [2024-09-12 20:05:36,930 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=361, Invalid=1895, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 20:05:36,930 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 506 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 36 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:36,930 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1181 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1257 Invalid, 4 Unknown, 0 Unchecked, 17.5s Time] [2024-09-12 20:05:36,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-09-12 20:05:36,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 232. [2024-09-12 20:05:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.4142011834319526) internal successors, (239), 211 states have internal predecessors, (239), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:05:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 268 transitions. [2024-09-12 20:05:36,984 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 268 transitions. Word has length 54 [2024-09-12 20:05:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:36,984 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 268 transitions. [2024-09-12 20:05:36,984 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.875) internal successors, (93), 23 states have internal predecessors, (93), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:36,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 268 transitions. [2024-09-12 20:05:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 20:05:36,984 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:36,984 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:36,999 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 20:05:37,185 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 20:05:37,185 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:37,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1877325431, now seen corresponding path program 1 times [2024-09-12 20:05:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600136071] [2024-09-12 20:05:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:37,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:37,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:37,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:37,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 20:05:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:37,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:37,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600136071] [2024-09-12 20:05:37,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600136071] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:37,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462862463] [2024-09-12 20:05:37,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:37,317 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:37,317 INFO L87 Difference]: Start difference. First operand 232 states and 268 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:37,610 INFO L93 Difference]: Finished difference Result 233 states and 268 transitions. [2024-09-12 20:05:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:05:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2024-09-12 20:05:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:37,611 INFO L225 Difference]: With dead ends: 233 [2024-09-12 20:05:37,611 INFO L226 Difference]: Without dead ends: 232 [2024-09-12 20:05:37,611 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:37,612 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 51 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:37,612 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 316 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:05:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-12 20:05:37,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-12 20:05:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 169 states have (on average 1.4082840236686391) internal successors, (238), 211 states have internal predecessors, (238), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:05:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 267 transitions. [2024-09-12 20:05:37,666 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 267 transitions. Word has length 54 [2024-09-12 20:05:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:37,668 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 267 transitions. [2024-09-12 20:05:37,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:37,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 267 transitions. [2024-09-12 20:05:37,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 20:05:37,668 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:37,668 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:37,669 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-09-12 20:05:37,669 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:37,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1659751431, now seen corresponding path program 1 times [2024-09-12 20:05:37,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:37,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18244553] [2024-09-12 20:05:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:37,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:37,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:37,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:05:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:37,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:37,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18244553] [2024-09-12 20:05:37,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18244553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:37,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469100880] [2024-09-12 20:05:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:37,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:37,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:37,864 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 20:05:37,865 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 20:05:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:37,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 20:05:37,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:37,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:38,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-09-12 20:05:38,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:05:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:38,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:38,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469100880] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:05:38,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:05:38,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 17 [2024-09-12 20:05:38,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316160928] [2024-09-12 20:05:38,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:38,225 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 20:05:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:38,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 20:05:38,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:05:38,226 INFO L87 Difference]: Start difference. First operand 232 states and 267 transitions. Second operand has 18 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:38,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:38,675 INFO L93 Difference]: Finished difference Result 242 states and 268 transitions. [2024-09-12 20:05:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 20:05:38,675 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2024-09-12 20:05:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:38,676 INFO L225 Difference]: With dead ends: 242 [2024-09-12 20:05:38,676 INFO L226 Difference]: Without dead ends: 241 [2024-09-12 20:05:38,677 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2024-09-12 20:05:38,677 INFO L434 NwaCegarLoop]: 88 mSDtfsCounter, 388 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:38,677 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 739 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:05:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-09-12 20:05:38,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 231. [2024-09-12 20:05:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 169 states have (on average 1.3905325443786982) internal successors, (235), 210 states have internal predecessors, (235), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:05:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 264 transitions. [2024-09-12 20:05:38,735 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 264 transitions. Word has length 55 [2024-09-12 20:05:38,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:38,735 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 264 transitions. [2024-09-12 20:05:38,735 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:38,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 264 transitions. [2024-09-12 20:05:38,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 20:05:38,736 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:38,736 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:38,756 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 20:05:38,936 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 20:05:38,936 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting func_to_recursive_line_26_to_34_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:38,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash 87313295, now seen corresponding path program 1 times [2024-09-12 20:05:38,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:38,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199115998] [2024-09-12 20:05:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:38,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:39,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:39,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 20:05:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:39,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:39,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199115998] [2024-09-12 20:05:39,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199115998] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:39,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642090872] [2024-09-12 20:05:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:39,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:39,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:39,113 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 20:05:39,114 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 20:05:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:39,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 20:05:39,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:39,219 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 11 treesize of output 7 [2024-09-12 20:05:39,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-09-12 20:05:39,317 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 20:05:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:39,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:39,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642090872] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:05:39,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:05:39,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 17 [2024-09-12 20:05:39,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246935975] [2024-09-12 20:05:39,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:39,505 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 20:05:39,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:39,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 20:05:39,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:05:39,506 INFO L87 Difference]: Start difference. First operand 231 states and 264 transitions. Second operand has 18 states, 15 states have (on average 6.666666666666667) internal successors, (100), 14 states have internal predecessors, (100), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:39,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:39,978 INFO L93 Difference]: Finished difference Result 260 states and 270 transitions. [2024-09-12 20:05:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 20:05:39,978 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.666666666666667) internal successors, (100), 14 states have internal predecessors, (100), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2024-09-12 20:05:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:39,979 INFO L225 Difference]: With dead ends: 260 [2024-09-12 20:05:39,979 INFO L226 Difference]: Without dead ends: 259 [2024-09-12 20:05:39,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-09-12 20:05:39,980 INFO L434 NwaCegarLoop]: 74 mSDtfsCounter, 315 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:39,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 778 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:05:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-12 20:05:40,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2024-09-12 20:05:40,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 169 states have (on average 1.378698224852071) internal successors, (233), 210 states have internal predecessors, (233), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:05:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 262 transitions. [2024-09-12 20:05:40,045 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 262 transitions. Word has length 56 [2024-09-12 20:05:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:40,045 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 262 transitions. [2024-09-12 20:05:40,046 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.666666666666667) internal successors, (100), 14 states have internal predecessors, (100), 7 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:40,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 262 transitions. [2024-09-12 20:05:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-12 20:05:40,047 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:40,048 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:40,061 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 20:05:40,252 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 20:05:40,252 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_26_to_34_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:40,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:40,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1588255045, now seen corresponding path program 1 times [2024-09-12 20:05:40,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:40,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39459350] [2024-09-12 20:05:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:40,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:40,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201850154] [2024-09-12 20:05:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:40,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:40,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:40,268 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 20:05:40,269 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 20:05:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:40,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-12 20:05:40,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:40,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:40,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-09-12 20:05:40,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-09-12 20:05:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:40,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:40,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:40,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39459350] [2024-09-12 20:05:40,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:40,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201850154] [2024-09-12 20:05:40,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201850154] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:40,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:05:40,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 20:05:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955959668] [2024-09-12 20:05:40,990 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:40,991 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:05:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:05:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-09-12 20:05:40,992 INFO L87 Difference]: Start difference. First operand 231 states and 262 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:05:41,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:41,377 INFO L93 Difference]: Finished difference Result 240 states and 263 transitions. [2024-09-12 20:05:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:05:41,378 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2024-09-12 20:05:41,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:41,379 INFO L225 Difference]: With dead ends: 240 [2024-09-12 20:05:41,379 INFO L226 Difference]: Without dead ends: 239 [2024-09-12 20:05:41,379 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-09-12 20:05:41,379 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 118 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:41,379 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 632 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:05:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-09-12 20:05:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 231. [2024-09-12 20:05:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 169 states have (on average 1.3727810650887573) internal successors, (232), 210 states have internal predecessors, (232), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2024-09-12 20:05:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2024-09-12 20:05:41,441 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 57 [2024-09-12 20:05:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:41,441 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2024-09-12 20:05:41,441 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:05:41,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2024-09-12 20:05:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 20:05:41,441 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:41,441 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:41,454 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-12 20:05:41,642 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-09-12 20:05:41,642 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:41,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:41,642 INFO L85 PathProgramCache]: Analyzing trace with hash -6165953, now seen corresponding path program 1 times [2024-09-12 20:05:41,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:41,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126949284] [2024-09-12 20:05:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:41,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:41,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983027964] [2024-09-12 20:05:41,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:41,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:41,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:41,655 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 20:05:41,656 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 20:05:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-12 20:05:41,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:41,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:41,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:41,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:41,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126949284] [2024-09-12 20:05:41,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983027964] [2024-09-12 20:05:41,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983027964] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:41,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:41,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-12 20:05:41,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077473913] [2024-09-12 20:05:41,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:41,968 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:05:41,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:41,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:05:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:41,968 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:42,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:42,259 INFO L93 Difference]: Finished difference Result 233 states and 262 transitions. [2024-09-12 20:05:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:05:42,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2024-09-12 20:05:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:42,260 INFO L225 Difference]: With dead ends: 233 [2024-09-12 20:05:42,261 INFO L226 Difference]: Without dead ends: 207 [2024-09-12 20:05:42,261 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:05:42,261 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 27 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:42,261 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 432 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:05:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-09-12 20:05:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-09-12 20:05:42,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 147 states have (on average 1.4217687074829932) internal successors, (209), 188 states have internal predecessors, (209), 11 states have call successors, (11), 8 states have call predecessors, (11), 10 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-12 20:05:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2024-09-12 20:05:42,319 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 58 [2024-09-12 20:05:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:42,319 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2024-09-12 20:05:42,319 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:42,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2024-09-12 20:05:42,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 20:05:42,320 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:42,320 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:42,333 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-12 20:05:42,524 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-12 20:05:42,525 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting func_to_recursive_line_26_to_34_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:42,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1991266031, now seen corresponding path program 1 times [2024-09-12 20:05:42,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:42,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190483360] [2024-09-12 20:05:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:42,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334296161] [2024-09-12 20:05:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:42,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:42,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:42,539 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 20:05:42,540 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 20:05:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:42,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 20:05:42,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:42,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:42,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:05:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:42,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:46,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190483360] [2024-09-12 20:05:46,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334296161] [2024-09-12 20:05:46,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334296161] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:46,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:05:46,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 20:05:46,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530526026] [2024-09-12 20:05:46,786 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:46,786 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:05:46,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:46,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:05:46,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2024-09-12 20:05:46,787 INFO L87 Difference]: Start difference. First operand 207 states and 236 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:05:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:47,107 INFO L93 Difference]: Finished difference Result 213 states and 236 transitions. [2024-09-12 20:05:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:05:47,108 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2024-09-12 20:05:47,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:47,108 INFO L225 Difference]: With dead ends: 213 [2024-09-12 20:05:47,109 INFO L226 Difference]: Without dead ends: 212 [2024-09-12 20:05:47,109 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2024-09-12 20:05:47,109 INFO L434 NwaCegarLoop]: 102 mSDtfsCounter, 82 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:47,109 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 761 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:05:47,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-09-12 20:05:47,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2024-09-12 20:05:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 147 states have (on average 1.4149659863945578) internal successors, (208), 188 states have internal predecessors, (208), 11 states have call successors, (11), 8 states have call predecessors, (11), 10 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-12 20:05:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 235 transitions. [2024-09-12 20:05:47,162 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 235 transitions. Word has length 58 [2024-09-12 20:05:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:47,163 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 235 transitions. [2024-09-12 20:05:47,163 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:05:47,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 235 transitions. [2024-09-12 20:05:47,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 20:05:47,164 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:47,164 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:47,177 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 20:05:47,365 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-09-12 20:05:47,365 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:05:47,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1599704707, now seen corresponding path program 1 times [2024-09-12 20:05:47,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:47,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953269823] [2024-09-12 20:05:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:47,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121519332] [2024-09-12 20:05:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:47,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:47,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:47,386 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 20:05:47,390 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 20:05:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:47,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-09-12 20:05:47,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:47,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:47,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:05:47,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:05:47,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:05:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:47,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:49,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:49,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953269823] [2024-09-12 20:05:49,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121519332] [2024-09-12 20:05:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121519332] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:05:49,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:05:49,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2024-09-12 20:05:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77302477] [2024-09-12 20:05:49,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:49,451 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 20:05:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 20:05:49,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2024-09-12 20:05:49,452 INFO L87 Difference]: Start difference. First operand 207 states and 235 transitions. Second operand has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:58,994 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 [] [2024-09-12 20:06:00,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:00,695 INFO L93 Difference]: Finished difference Result 211 states and 235 transitions. [2024-09-12 20:06:00,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 20:06:00,695 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-09-12 20:06:00,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:00,696 INFO L225 Difference]: With dead ends: 211 [2024-09-12 20:06:00,696 INFO L226 Difference]: Without dead ends: 208 [2024-09-12 20:06:00,697 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=494, Invalid=2586, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 20:06:00,697 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 467 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:00,697 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 834 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1094 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2024-09-12 20:06:00,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-12 20:06:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2024-09-12 20:06:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 147 states have (on average 1.3741496598639455) internal successors, (202), 186 states have internal predecessors, (202), 11 states have call successors, (11), 8 states have call predecessors, (11), 10 states have return successors, (16), 10 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-12 20:06:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 229 transitions. [2024-09-12 20:06:00,777 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 229 transitions. Word has length 59 [2024-09-12 20:06:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:00,777 INFO L474 AbstractCegarLoop]: Abstraction has 205 states and 229 transitions. [2024-09-12 20:06:00,777 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.6785714285714284) internal successors, (103), 27 states have internal predecessors, (103), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:06:00,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 229 transitions. [2024-09-12 20:06:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 20:06:00,778 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:00,778 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:00,790 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-12 20:06:00,978 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-09-12 20:06:00,978 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2024-09-12 20:06:00,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:00,979 INFO L85 PathProgramCache]: Analyzing trace with hash 282072127, now seen corresponding path program 1 times [2024-09-12 20:06:00,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:00,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591958483] [2024-09-12 20:06:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:00,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:00,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187499179] [2024-09-12 20:06:00,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:00,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:00,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:00,995 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 20:06:00,996 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 20:06:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:01,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-12 20:06:01,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:01,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:06:01,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 20:06:01,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:06:01,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 20:06:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:01,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:19,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591958483] [2024-09-12 20:06:19,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187499179] [2024-09-12 20:06:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187499179] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:06:19,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:06:19,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2024-09-12 20:06:19,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247642367] [2024-09-12 20:06:19,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:19,694 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 20:06:19,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:19,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 20:06:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=921, Unknown=1, NotChecked=0, Total=1122 [2024-09-12 20:06:19,695 INFO L87 Difference]: Start difference. First operand 205 states and 229 transitions. Second operand has 34 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:06:34,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:06:37,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:06:49,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:03,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:06,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:15,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:20,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:24,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:30,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:44,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:47,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:51,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:55,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:07:59,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:03,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:07,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:11,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:15,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:19,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:23,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:37,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:41,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:49,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:54,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:08:58,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:09:00,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-12 20:09:05,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []