./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/vogal-1.i --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/loops/vogal-1.i -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 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e --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 17:54:37,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 17:54:38,073 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 17:54:38,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 17:54:38,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 17:54:38,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 17:54:38,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 17:54:38,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 17:54:38,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 17:54:38,118 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 17:54:38,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 17:54:38,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 17:54:38,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 17:54:38,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 17:54:38,123 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 17:54:38,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 17:54:38,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 17:54:38,123 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 17:54:38,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 17:54:38,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 17:54:38,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 17:54:38,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 17:54:38,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 17:54:38,128 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 17:54:38,128 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 17:54:38,129 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 17:54:38,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 17:54:38,129 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 17:54:38,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 17:54:38,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 17:54:38,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 17:54:38,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 17:54:38,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 17:54:38,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 17:54:38,131 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 17:54:38,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 17:54:38,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 17:54:38,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 17:54:38,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 17:54:38,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 17:54:38,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 17:54:38,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 17:54:38,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 17:54:38,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 17:54:38,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 17:54:38,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 17:54:38,486 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 17:54:38,486 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 17:54:38,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops/vogal-1.i [2024-09-12 17:54:40,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 17:54:40,264 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 17:54:40,264 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/vogal-1.i [2024-09-12 17:54:40,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c6b2c522a/a5649f1b88e242fd94f023ca85a055ed/FLAG0f4046d3c [2024-09-12 17:54:40,641 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c6b2c522a/a5649f1b88e242fd94f023ca85a055ed [2024-09-12 17:54:40,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 17:54:40,644 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 17:54:40,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 17:54:40,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 17:54:40,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 17:54:40,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:40,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f50dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40, skipping insertion in model container [2024-09-12 17:54:40,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:40,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 17:54:40,835 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/loops/vogal-1.i[895,908] [2024-09-12 17:54:40,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 17:54:40,875 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 17:54:40,892 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/loops/vogal-1.i[895,908] [2024-09-12 17:54:40,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 17:54:40,925 INFO L204 MainTranslator]: Completed translation [2024-09-12 17:54:40,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40 WrapperNode [2024-09-12 17:54:40,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 17:54:40,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 17:54:40,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 17:54:40,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 17:54:40,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:40,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:40,954 INFO L138 Inliner]: procedures = 17, calls = 34, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 17:54:40,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 17:54:40,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 17:54:40,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 17:54:40,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 17:54:40,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:40,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:40,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:40,992 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 6, 13]. 62 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 11]. The 1 writes are split as follows [0, 1, 0]. [2024-09-12 17:54:40,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:40,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:41,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:41,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:41,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:41,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:41,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 17:54:41,022 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 17:54:41,022 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 17:54:41,022 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 17:54:41,023 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (1/1) ... [2024-09-12 17:54:41,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 17:54:41,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:41,060 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 17:54:41,063 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 17:54:41,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 17:54:41,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 17:54:41,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 17:54:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 17:54:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 17:54:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 17:54:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 17:54:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 17:54:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 17:54:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 17:54:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 17:54:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 17:54:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 17:54:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 17:54:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 17:54:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 17:54:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 17:54:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 17:54:41,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 17:54:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 17:54:41,202 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 17:54:41,205 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 17:54:41,477 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-09-12 17:54:41,478 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 17:54:41,508 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 17:54:41,508 INFO L318 CfgBuilder]: Removed 6 assume(true) statements. [2024-09-12 17:54:41,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 05:54:41 BoogieIcfgContainer [2024-09-12 17:54:41,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 17:54:41,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 17:54:41,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 17:54:41,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 17:54:41,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 05:54:40" (1/3) ... [2024-09-12 17:54:41,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424ba654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 05:54:41, skipping insertion in model container [2024-09-12 17:54:41,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:40" (2/3) ... [2024-09-12 17:54:41,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424ba654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 05:54:41, skipping insertion in model container [2024-09-12 17:54:41,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 05:54:41" (3/3) ... [2024-09-12 17:54:41,524 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal-1.i [2024-09-12 17:54:41,543 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 17:54:41,543 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-09-12 17:54:41,628 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 17:54:41,637 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;@64564463, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 17:54:41,638 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-12 17:54:41,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 32 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 17:54:41,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 17:54:41,651 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:41,653 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 17:54:41,654 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:41,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:41,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1779602765, now seen corresponding path program 1 times [2024-09-12 17:54:41,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:41,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802121021] [2024-09-12 17:54:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:41,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:41,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:41,886 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 17:54:41,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:41,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802121021] [2024-09-12 17:54:41,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802121021] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:54:41,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:54:41,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 17:54:41,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566005716] [2024-09-12 17:54:41,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:41,900 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 17:54:41,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 17:54:41,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 17:54:41,932 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 32 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 17:54:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:41,970 INFO L93 Difference]: Finished difference Result 72 states and 101 transitions. [2024-09-12 17:54:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 17:54:41,973 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 17:54:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:41,978 INFO L225 Difference]: With dead ends: 72 [2024-09-12 17:54:41,978 INFO L226 Difference]: Without dead ends: 32 [2024-09-12 17:54:41,980 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 17:54:41,983 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:41,984 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-12 17:54:42,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-12 17:54:42,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.4) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 3 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 17:54:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-09-12 17:54:42,022 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 17 [2024-09-12 17:54:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:42,022 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-09-12 17:54:42,023 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 17:54:42,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-09-12 17:54:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 17:54:42,025 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:42,025 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 17:54:42,025 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 17:54:42,025 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:42,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:42,027 INFO L85 PathProgramCache]: Analyzing trace with hash 816441119, now seen corresponding path program 1 times [2024-09-12 17:54:42,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:42,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762884698] [2024-09-12 17:54:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:42,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:42,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:42,296 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 17:54:42,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:42,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762884698] [2024-09-12 17:54:42,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762884698] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:54:42,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:54:42,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 17:54:42,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144655076] [2024-09-12 17:54:42,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:42,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 17:54:42,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 17:54:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:54:42,305 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 17:54:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:42,371 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2024-09-12 17:54:42,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 17:54:42,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 17:54:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:42,374 INFO L225 Difference]: With dead ends: 75 [2024-09-12 17:54:42,375 INFO L226 Difference]: Without dead ends: 49 [2024-09-12 17:54:42,376 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:54:42,378 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:42,379 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 56 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:54:42,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-12 17:54:42,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2024-09-12 17:54:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 3 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 17:54:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-12 17:54:42,389 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 19 [2024-09-12 17:54:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:42,390 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-12 17:54:42,390 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 17:54:42,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:42,391 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-12 17:54:42,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 17:54:42,392 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:42,392 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 17:54:42,392 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 17:54:42,392 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:42,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:42,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1830625526, now seen corresponding path program 1 times [2024-09-12 17:54:42,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:42,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929607812] [2024-09-12 17:54:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:42,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:42,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:42,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929607812] [2024-09-12 17:54:42,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929607812] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345842478] [2024-09-12 17:54:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:42,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:42,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:42,660 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 17:54:42,662 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 17:54:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:42,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 17:54:42,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 17:54:42,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 17:54:42,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345842478] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:54:42,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 17:54:42,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-09-12 17:54:42,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446785383] [2024-09-12 17:54:42,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:42,839 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 17:54:42,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 17:54:42,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-09-12 17:54:42,840 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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 17:54:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:42,900 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-09-12 17:54:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 17:54:42,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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 17:54:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:42,902 INFO L225 Difference]: With dead ends: 61 [2024-09-12 17:54:42,902 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 17:54:42,902 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 17:54:42,904 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 33 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:42,904 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 154 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:42,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 17:54:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2024-09-12 17:54:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.394736842105263) internal successors, (53), 40 states have internal predecessors, (53), 3 states have call successors, (3), 3 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 17:54:42,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-09-12 17:54:42,913 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 20 [2024-09-12 17:54:42,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:42,914 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-09-12 17:54:42,915 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 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 17:54:42,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-09-12 17:54:42,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 17:54:42,916 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:42,916 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 17:54:42,930 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 17:54:43,117 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:43,117 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:43,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:43,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1167408803, now seen corresponding path program 1 times [2024-09-12 17:54:43,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:43,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038173020] [2024-09-12 17:54:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:43,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:43,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 17:54:43,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:43,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038173020] [2024-09-12 17:54:43,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038173020] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:54:43,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:54:43,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 17:54:43,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400002612] [2024-09-12 17:54:43,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:43,253 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 17:54:43,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 17:54:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 17:54:43,254 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:43,289 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2024-09-12 17:54:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 17:54:43,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 17:54:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:43,292 INFO L225 Difference]: With dead ends: 56 [2024-09-12 17:54:43,293 INFO L226 Difference]: Without dead ends: 54 [2024-09-12 17:54:43,293 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 17:54:43,294 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:43,295 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 99 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-12 17:54:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-09-12 17:54:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.391304347826087) internal successors, (64), 48 states have internal predecessors, (64), 3 states have call successors, (3), 3 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 17:54:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-09-12 17:54:43,306 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 19 [2024-09-12 17:54:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:43,306 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-09-12 17:54:43,306 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:43,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-09-12 17:54:43,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 17:54:43,308 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:43,308 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] [2024-09-12 17:54:43,308 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 17:54:43,309 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:43,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:43,310 INFO L85 PathProgramCache]: Analyzing trace with hash 881887856, now seen corresponding path program 1 times [2024-09-12 17:54:43,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:43,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643564381] [2024-09-12 17:54:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:43,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:43,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 17:54:43,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:43,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643564381] [2024-09-12 17:54:43,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643564381] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:43,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237843360] [2024-09-12 17:54:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:43,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:43,476 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 17:54:43,477 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 17:54:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:43,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 17:54:43,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 17:54:43,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 17:54:43,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237843360] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:54:43,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 17:54:43,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-12 17:54:43,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51132117] [2024-09-12 17:54:43,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:43,627 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 17:54:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:43,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 17:54:43,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 17:54:43,628 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:43,670 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2024-09-12 17:54:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 17:54:43,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-09-12 17:54:43,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:43,675 INFO L225 Difference]: With dead ends: 53 [2024-09-12 17:54:43,675 INFO L226 Difference]: Without dead ends: 52 [2024-09-12 17:54:43,676 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 17:54:43,677 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:43,678 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 87 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-12 17:54:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-09-12 17:54:43,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 3 states have call successors, (3), 3 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 17:54:43,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2024-09-12 17:54:43,690 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 24 [2024-09-12 17:54:43,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:43,691 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2024-09-12 17:54:43,694 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:43,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:43,695 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2024-09-12 17:54:43,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 17:54:43,695 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:43,696 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:54:43,712 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 17:54:43,896 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:43,897 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:43,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:43,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1568719878, now seen corresponding path program 1 times [2024-09-12 17:54:43,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:43,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600319886] [2024-09-12 17:54:43,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:43,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:43,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 17:54:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600319886] [2024-09-12 17:54:43,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600319886] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:43,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618377031] [2024-09-12 17:54:43,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:43,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:43,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:44,001 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 17:54:44,002 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 17:54:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:44,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 17:54:44,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 17:54:44,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 17:54:44,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618377031] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:54:44,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:54:44,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-09-12 17:54:44,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293043153] [2024-09-12 17:54:44,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:54:44,211 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 17:54:44,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:44,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 17:54:44,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 17:54:44,213 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:44,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:44,272 INFO L93 Difference]: Finished difference Result 81 states and 107 transitions. [2024-09-12 17:54:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 17:54:44,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 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 17:54:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:44,274 INFO L225 Difference]: With dead ends: 81 [2024-09-12 17:54:44,276 INFO L226 Difference]: Without dead ends: 80 [2024-09-12 17:54:44,277 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 17:54:44,277 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 39 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:44,278 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 145 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-12 17:54:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2024-09-12 17:54:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 71 states have internal predecessors, (96), 3 states have call successors, (3), 3 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 17:54:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2024-09-12 17:54:44,307 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 25 [2024-09-12 17:54:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:44,308 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2024-09-12 17:54:44,308 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:44,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:44,311 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2024-09-12 17:54:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-12 17:54:44,312 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:44,312 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 17:54:44,329 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 17:54:44,512 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 17:54:44,513 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:44,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1927734531, now seen corresponding path program 1 times [2024-09-12 17:54:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:44,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105802212] [2024-09-12 17:54:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:44,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:44,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 17:54:44,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:44,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105802212] [2024-09-12 17:54:44,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105802212] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:44,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724178863] [2024-09-12 17:54:44,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:44,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:44,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:44,617 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 17:54:44,622 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 17:54:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:44,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 17:54:44,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 17:54:44,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 17:54:44,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724178863] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:54:44,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 17:54:44,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-09-12 17:54:44,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697784377] [2024-09-12 17:54:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:44,705 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 17:54:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 17:54:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-12 17:54:44,706 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 17:54:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:44,728 INFO L93 Difference]: Finished difference Result 144 states and 192 transitions. [2024-09-12 17:54:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 17:54:44,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 17:54:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:44,730 INFO L225 Difference]: With dead ends: 144 [2024-09-12 17:54:44,730 INFO L226 Difference]: Without dead ends: 80 [2024-09-12 17:54:44,731 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-12 17:54:44,731 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:44,732 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-12 17:54:44,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-12 17:54:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 74 states have (on average 1.364864864864865) internal successors, (101), 75 states have internal predecessors, (101), 3 states have call successors, (3), 3 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 17:54:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2024-09-12 17:54:44,752 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 26 [2024-09-12 17:54:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:44,752 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2024-09-12 17:54:44,753 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 17:54:44,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:44,753 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2024-09-12 17:54:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 17:54:44,754 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:44,754 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] [2024-09-12 17:54:44,772 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 17:54:44,955 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:44,956 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:44,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:44,956 INFO L85 PathProgramCache]: Analyzing trace with hash -778290626, now seen corresponding path program 1 times [2024-09-12 17:54:44,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:44,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865908696] [2024-09-12 17:54:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:44,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:45,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 17:54:45,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:45,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865908696] [2024-09-12 17:54:45,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865908696] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:45,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18640664] [2024-09-12 17:54:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:45,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:45,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:45,050 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 17:54:45,051 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 17:54:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:45,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 17:54:45,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:45,307 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 16 treesize of output 8 [2024-09-12 17:54:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 17:54:45,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:45,451 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-09-12 17:54:45,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2024-09-12 17:54:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:54:45,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18640664] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:54:45,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:54:45,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 7] total 15 [2024-09-12 17:54:45,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769489212] [2024-09-12 17:54:45,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:54:45,485 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 17:54:45,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:45,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 17:54:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-12 17:54:45,486 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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 17:54:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:45,760 INFO L93 Difference]: Finished difference Result 378 states and 507 transitions. [2024-09-12 17:54:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 17:54:45,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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 28 [2024-09-12 17:54:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:45,764 INFO L225 Difference]: With dead ends: 378 [2024-09-12 17:54:45,764 INFO L226 Difference]: Without dead ends: 305 [2024-09-12 17:54:45,765 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-09-12 17:54:45,766 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 208 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:45,767 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 260 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:54:45,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-09-12 17:54:45,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 83. [2024-09-12 17:54:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 78 states have internal predecessors, (104), 3 states have call successors, (3), 3 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 17:54:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2024-09-12 17:54:45,814 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 28 [2024-09-12 17:54:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:45,815 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2024-09-12 17:54:45,815 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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 17:54:45,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2024-09-12 17:54:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 17:54:45,816 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:45,817 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] [2024-09-12 17:54:45,833 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 17:54:46,020 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 17:54:46,021 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:46,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:46,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1176179896, now seen corresponding path program 1 times [2024-09-12 17:54:46,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:46,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492900120] [2024-09-12 17:54:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:46,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:46,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:54:46,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:46,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492900120] [2024-09-12 17:54:46,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492900120] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:46,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258245745] [2024-09-12 17:54:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:46,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:46,112 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 17:54:46,114 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 17:54:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:46,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 17:54:46,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 17:54:46,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:46,343 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-09-12 17:54:46,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2024-09-12 17:54:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 17:54:46,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258245745] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:46,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-12 17:54:46,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 8] total 13 [2024-09-12 17:54:46,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283637718] [2024-09-12 17:54:46,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:46,370 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 17:54:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 17:54:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-12 17:54:46,371 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 17:54:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:46,546 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2024-09-12 17:54:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 17:54:46,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 30 [2024-09-12 17:54:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:46,547 INFO L225 Difference]: With dead ends: 132 [2024-09-12 17:54:46,548 INFO L226 Difference]: Without dead ends: 81 [2024-09-12 17:54:46,548 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-09-12 17:54:46,549 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:46,550 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 138 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:54:46,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-12 17:54:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-09-12 17:54:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 76 states have internal predecessors, (101), 3 states have call successors, (3), 3 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 17:54:46,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 105 transitions. [2024-09-12 17:54:46,585 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 105 transitions. Word has length 30 [2024-09-12 17:54:46,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:46,586 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 105 transitions. [2024-09-12 17:54:46,586 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 17:54:46,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 105 transitions. [2024-09-12 17:54:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 17:54:46,589 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:46,589 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:54:46,609 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 17:54:46,793 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:46,794 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:46,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:46,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1864995549, now seen corresponding path program 1 times [2024-09-12 17:54:46,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:46,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700815339] [2024-09-12 17:54:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:46,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:46,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 17:54:46,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:46,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700815339] [2024-09-12 17:54:46,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700815339] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:46,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853419229] [2024-09-12 17:54:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:46,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:46,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:46,900 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 17:54:46,902 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 17:54:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:46,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 17:54:46,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:54:47,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 17:54:47,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853419229] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:47,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-12 17:54:47,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 10] total 19 [2024-09-12 17:54:47,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312304709] [2024-09-12 17:54:47,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:47,363 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 17:54:47,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:47,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 17:54:47,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-09-12 17:54:47,364 INFO L87 Difference]: Start difference. First operand 81 states and 105 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 17:54:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:47,503 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2024-09-12 17:54:47,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 17:54:47,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 32 [2024-09-12 17:54:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:47,505 INFO L225 Difference]: With dead ends: 131 [2024-09-12 17:54:47,505 INFO L226 Difference]: Without dead ends: 82 [2024-09-12 17:54:47,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-09-12 17:54:47,506 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:47,507 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 123 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:54:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-12 17:54:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-09-12 17:54:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 77 states have internal predecessors, (102), 3 states have call successors, (3), 3 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 17:54:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2024-09-12 17:54:47,524 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 32 [2024-09-12 17:54:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:47,525 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2024-09-12 17:54:47,525 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 17:54:47,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2024-09-12 17:54:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 17:54:47,526 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:47,526 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:54:47,543 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 17:54:47,730 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:47,731 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:47,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:47,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1280834281, now seen corresponding path program 1 times [2024-09-12 17:54:47,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:47,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449513144] [2024-09-12 17:54:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:47,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:47,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 17:54:47,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:47,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449513144] [2024-09-12 17:54:47,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449513144] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:47,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922644515] [2024-09-12 17:54:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:47,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:47,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:47,849 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 17:54:47,851 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 17:54:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:47,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 17:54:47,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 17:54:47,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 17:54:47,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922644515] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:47,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-12 17:54:47,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 7 [2024-09-12 17:54:47,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730038119] [2024-09-12 17:54:47,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:47,948 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 17:54:47,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:47,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 17:54:47,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 17:54:47,949 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 17:54:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:47,994 INFO L93 Difference]: Finished difference Result 156 states and 210 transitions. [2024-09-12 17:54:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 17:54:47,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 33 [2024-09-12 17:54:47,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:47,996 INFO L225 Difference]: With dead ends: 156 [2024-09-12 17:54:47,996 INFO L226 Difference]: Without dead ends: 90 [2024-09-12 17:54:47,997 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 17:54:47,997 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:47,997 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 52 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:47,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-12 17:54:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-09-12 17:54:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 85 states have internal predecessors, (110), 3 states have call successors, (3), 3 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 17:54:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 114 transitions. [2024-09-12 17:54:48,018 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 114 transitions. Word has length 33 [2024-09-12 17:54:48,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:48,019 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 114 transitions. [2024-09-12 17:54:48,019 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 17:54:48,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:48,019 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 114 transitions. [2024-09-12 17:54:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-12 17:54:48,020 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:48,020 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:54:48,044 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-12 17:54:48,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:48,221 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:48,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1061436416, now seen corresponding path program 1 times [2024-09-12 17:54:48,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:48,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604497814] [2024-09-12 17:54:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:48,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:48,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 17:54:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:48,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604497814] [2024-09-12 17:54:48,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604497814] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:48,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923814775] [2024-09-12 17:54:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:48,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:48,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:48,365 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 17:54:48,367 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 17:54:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:48,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 17:54:48,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:48,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 17:54:48,654 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 17:54:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:54:48,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:48,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:54:48,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 56 [2024-09-12 17:54:48,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:54:48,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 35 [2024-09-12 17:54:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 17:54:48,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923814775] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:54:48,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:54:48,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 9] total 19 [2024-09-12 17:54:48,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176798076] [2024-09-12 17:54:48,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:54:48,938 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 17:54:48,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 17:54:48,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-12 17:54:48,940 INFO L87 Difference]: Start difference. First operand 90 states and 114 transitions. Second operand has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 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 17:54:49,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:49,450 INFO L93 Difference]: Finished difference Result 532 states and 701 transitions. [2024-09-12 17:54:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 17:54:49,451 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 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 36 [2024-09-12 17:54:49,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:49,454 INFO L225 Difference]: With dead ends: 532 [2024-09-12 17:54:49,454 INFO L226 Difference]: Without dead ends: 450 [2024-09-12 17:54:49,454 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2024-09-12 17:54:49,455 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 413 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:49,455 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 417 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 17:54:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-09-12 17:54:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 104. [2024-09-12 17:54:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 99 states have internal predecessors, (128), 3 states have call successors, (3), 3 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 17:54:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2024-09-12 17:54:49,493 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 36 [2024-09-12 17:54:49,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:49,493 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2024-09-12 17:54:49,493 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 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 17:54:49,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2024-09-12 17:54:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 17:54:49,494 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:49,495 INFO L216 NwaCegarLoop]: trace histogram [3, 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 17:54:49,512 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 17:54:49,695 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 17:54:49,695 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:49,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1830890297, now seen corresponding path program 1 times [2024-09-12 17:54:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:49,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803602500] [2024-09-12 17:54:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:49,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 17:54:49,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:49,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803602500] [2024-09-12 17:54:49,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803602500] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:49,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528053243] [2024-09-12 17:54:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:49,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:49,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:49,829 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 17:54:49,831 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 17:54:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:49,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 17:54:49,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 17:54:49,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 17:54:49,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528053243] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:54:49,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:54:49,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 10 [2024-09-12 17:54:49,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574844371] [2024-09-12 17:54:49,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:54:49,991 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 17:54:49,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 17:54:49,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 17:54:49,992 INFO L87 Difference]: Start difference. First operand 104 states and 132 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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 17:54:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:50,576 INFO L93 Difference]: Finished difference Result 765 states and 1037 transitions. [2024-09-12 17:54:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 17:54:50,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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 39 [2024-09-12 17:54:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:50,580 INFO L225 Difference]: With dead ends: 765 [2024-09-12 17:54:50,581 INFO L226 Difference]: Without dead ends: 670 [2024-09-12 17:54:50,581 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2024-09-12 17:54:50,583 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 448 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:50,583 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 300 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 17:54:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2024-09-12 17:54:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 142. [2024-09-12 17:54:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 136 states have (on average 1.2941176470588236) internal successors, (176), 137 states have internal predecessors, (176), 3 states have call successors, (3), 3 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 17:54:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 180 transitions. [2024-09-12 17:54:50,638 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 180 transitions. Word has length 39 [2024-09-12 17:54:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:50,638 INFO L474 AbstractCegarLoop]: Abstraction has 142 states and 180 transitions. [2024-09-12 17:54:50,638 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 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 17:54:50,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 180 transitions. [2024-09-12 17:54:50,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-12 17:54:50,641 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:50,641 INFO L216 NwaCegarLoop]: trace histogram [4, 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] [2024-09-12 17:54:50,663 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 17:54:50,841 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 17:54:50,842 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:50,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:50,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1234157383, now seen corresponding path program 1 times [2024-09-12 17:54:50,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:50,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264244661] [2024-09-12 17:54:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:50,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:51,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 17:54:51,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:51,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264244661] [2024-09-12 17:54:51,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264244661] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:51,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227135183] [2024-09-12 17:54:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:51,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:51,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:51,019 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 17:54:51,021 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 17:54:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:51,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 17:54:51,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:51,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 17:54:51,551 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 17:54:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 17:54:51,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:51,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:54:51,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 56 [2024-09-12 17:54:51,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:54:51,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 35 [2024-09-12 17:54:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 17:54:52,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227135183] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:54:52,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:54:52,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 13] total 30 [2024-09-12 17:54:52,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089710428] [2024-09-12 17:54:52,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:54:52,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 17:54:52,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 17:54:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2024-09-12 17:54:52,198 INFO L87 Difference]: Start difference. First operand 142 states and 180 transitions. Second operand has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 30 states have internal predecessors, (88), 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 17:54:54,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:54,220 INFO L93 Difference]: Finished difference Result 1277 states and 1686 transitions. [2024-09-12 17:54:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 17:54:54,221 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 30 states have internal predecessors, (88), 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 44 [2024-09-12 17:54:54,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:54,226 INFO L225 Difference]: With dead ends: 1277 [2024-09-12 17:54:54,226 INFO L226 Difference]: Without dead ends: 1145 [2024-09-12 17:54:54,228 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=655, Invalid=2537, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 17:54:54,229 INFO L434 NwaCegarLoop]: 94 mSDtfsCounter, 586 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:54,229 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1082 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 17:54:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2024-09-12 17:54:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 216. [2024-09-12 17:54:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 210 states have (on average 1.2857142857142858) internal successors, (270), 211 states have internal predecessors, (270), 3 states have call successors, (3), 3 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 17:54:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 274 transitions. [2024-09-12 17:54:54,320 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 274 transitions. Word has length 44 [2024-09-12 17:54:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:54,321 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 274 transitions. [2024-09-12 17:54:54,321 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 30 states have internal predecessors, (88), 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 17:54:54,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 274 transitions. [2024-09-12 17:54:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 17:54:54,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:54,323 INFO L216 NwaCegarLoop]: trace histogram [5, 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 17:54:54,340 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 17:54:54,526 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 17:54:54,527 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:54,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1485429414, now seen corresponding path program 1 times [2024-09-12 17:54:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:54,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767520694] [2024-09-12 17:54:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:54,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:54,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 17:54:54,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:54,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767520694] [2024-09-12 17:54:54,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767520694] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:54,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989931831] [2024-09-12 17:54:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:54,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:54,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:54,985 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 17:54:54,992 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 17:54:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:55,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 17:54:55,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 17:54:55,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 17:54:55,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989931831] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:54:55,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:54:55,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-09-12 17:54:55,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741092864] [2024-09-12 17:54:55,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:54:55,364 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 17:54:55,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 17:54:55,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-09-12 17:54:55,365 INFO L87 Difference]: Start difference. First operand 216 states and 274 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 15 states have internal predecessors, (70), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:55,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:55,831 INFO L93 Difference]: Finished difference Result 485 states and 613 transitions. [2024-09-12 17:54:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 17:54:55,832 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 15 states have internal predecessors, (70), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-09-12 17:54:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:55,835 INFO L225 Difference]: With dead ends: 485 [2024-09-12 17:54:55,835 INFO L226 Difference]: Without dead ends: 480 [2024-09-12 17:54:55,837 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-09-12 17:54:55,837 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 94 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:55,838 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 655 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:54:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-09-12 17:54:56,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 298. [2024-09-12 17:54:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 292 states have (on average 1.2945205479452055) internal successors, (378), 293 states have internal predecessors, (378), 3 states have call successors, (3), 3 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 17:54:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 382 transitions. [2024-09-12 17:54:56,014 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 382 transitions. Word has length 47 [2024-09-12 17:54:56,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:56,016 INFO L474 AbstractCegarLoop]: Abstraction has 298 states and 382 transitions. [2024-09-12 17:54:56,016 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 15 states have internal predecessors, (70), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:56,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:56,017 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 382 transitions. [2024-09-12 17:54:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 17:54:56,017 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:56,017 INFO L216 NwaCegarLoop]: trace histogram [5, 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 17:54:56,035 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-12 17:54:56,218 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 17:54:56,219 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:56,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash -886309848, now seen corresponding path program 1 times [2024-09-12 17:54:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:56,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372659067] [2024-09-12 17:54:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:57,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-12 17:54:57,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372659067] [2024-09-12 17:54:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372659067] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088765366] [2024-09-12 17:54:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:57,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:57,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:57,779 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 17:54:57,780 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 17:54:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:57,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 17:54:57,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:58,171 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 20 treesize of output 12 [2024-09-12 17:54:58,177 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 16 treesize of output 8 [2024-09-12 17:54:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 17:54:58,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:58,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:54:58,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2024-09-12 17:54:58,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:54:58,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 42 [2024-09-12 17:54:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-12 17:54:58,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088765366] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:54:58,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:54:58,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 28 [2024-09-12 17:54:58,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856332027] [2024-09-12 17:54:58,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:54:58,683 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 17:54:58,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:58,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 17:54:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2024-09-12 17:54:58,685 INFO L87 Difference]: Start difference. First operand 298 states and 382 transitions. Second operand has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 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 17:54:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:59,471 INFO L93 Difference]: Finished difference Result 667 states and 857 transitions. [2024-09-12 17:54:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 17:54:59,472 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 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 47 [2024-09-12 17:54:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:59,475 INFO L225 Difference]: With dead ends: 667 [2024-09-12 17:54:59,475 INFO L226 Difference]: Without dead ends: 464 [2024-09-12 17:54:59,476 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 17:54:59,477 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 238 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:59,477 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 312 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 17:54:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-09-12 17:54:59,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 308. [2024-09-12 17:54:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 302 states have (on average 1.2516556291390728) internal successors, (378), 303 states have internal predecessors, (378), 3 states have call successors, (3), 3 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 17:54:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 382 transitions. [2024-09-12 17:54:59,632 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 382 transitions. Word has length 47 [2024-09-12 17:54:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:59,632 INFO L474 AbstractCegarLoop]: Abstraction has 308 states and 382 transitions. [2024-09-12 17:54:59,632 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 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 17:54:59,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 382 transitions. [2024-09-12 17:54:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 17:54:59,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:59,634 INFO L216 NwaCegarLoop]: trace histogram [5, 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 17:54:59,651 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 17:54:59,834 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 17:54:59,835 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:59,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:59,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1850046064, now seen corresponding path program 2 times [2024-09-12 17:54:59,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:59,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132273974] [2024-09-12 17:54:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 17:55:01,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:01,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132273974] [2024-09-12 17:55:01,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132273974] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:01,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655214678] [2024-09-12 17:55:01,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:55:01,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:01,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:01,212 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 17:55:01,214 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 17:55:01,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:55:01,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:01,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 17:55:01,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:01,625 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 20 treesize of output 12 [2024-09-12 17:55:01,627 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 16 treesize of output 8 [2024-09-12 17:55:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 17:55:01,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:01,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:55:01,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2024-09-12 17:55:01,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:55:01,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 42 [2024-09-12 17:55:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 17:55:02,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655214678] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:02,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:02,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 36 [2024-09-12 17:55:02,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363959736] [2024-09-12 17:55:02,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:02,144 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 17:55:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 17:55:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1024, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 17:55:02,145 INFO L87 Difference]: Start difference. First operand 308 states and 382 transitions. Second operand has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 states have internal predecessors, (93), 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 17:55:03,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:03,519 INFO L93 Difference]: Finished difference Result 522 states and 657 transitions. [2024-09-12 17:55:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 17:55:03,520 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 states have internal predecessors, (93), 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 47 [2024-09-12 17:55:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:03,523 INFO L225 Difference]: With dead ends: 522 [2024-09-12 17:55:03,523 INFO L226 Difference]: Without dead ends: 429 [2024-09-12 17:55:03,524 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=623, Invalid=2239, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 17:55:03,524 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 214 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:03,525 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 559 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 17:55:03,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-09-12 17:55:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 309. [2024-09-12 17:55:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 303 states have (on average 1.2343234323432344) internal successors, (374), 304 states have internal predecessors, (374), 3 states have call successors, (3), 3 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 17:55:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2024-09-12 17:55:03,665 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 47 [2024-09-12 17:55:03,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:03,665 INFO L474 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2024-09-12 17:55:03,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 states have internal predecessors, (93), 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 17:55:03,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:03,666 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2024-09-12 17:55:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 17:55:03,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:03,667 INFO L216 NwaCegarLoop]: trace histogram [5, 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] [2024-09-12 17:55:03,685 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 17:55:03,867 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 17:55:03,867 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:03,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:03,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1004804076, now seen corresponding path program 2 times [2024-09-12 17:55:03,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:03,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682726281] [2024-09-12 17:55:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:04,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 17:55:04,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:04,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682726281] [2024-09-12 17:55:04,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682726281] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:04,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636387962] [2024-09-12 17:55:04,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:55:04,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:04,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:04,247 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 17:55:04,249 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 17:55:04,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:55:04,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:04,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-12 17:55:04,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 17:55:04,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 17:55:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636387962] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:04,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:04,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 27 [2024-09-12 17:55:04,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983891099] [2024-09-12 17:55:04,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:04,770 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 17:55:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 17:55:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-09-12 17:55:04,771 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 25 states have internal predecessors, (84), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:06,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:06,104 INFO L93 Difference]: Finished difference Result 881 states and 1105 transitions. [2024-09-12 17:55:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-12 17:55:06,105 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 25 states have internal predecessors, (84), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-09-12 17:55:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:06,109 INFO L225 Difference]: With dead ends: 881 [2024-09-12 17:55:06,109 INFO L226 Difference]: Without dead ends: 875 [2024-09-12 17:55:06,110 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=295, Invalid=2785, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 17:55:06,110 INFO L434 NwaCegarLoop]: 98 mSDtfsCounter, 595 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:06,111 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1357 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 17:55:06,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-09-12 17:55:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 431. [2024-09-12 17:55:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.2329411764705882) internal successors, (524), 426 states have internal predecessors, (524), 3 states have call successors, (3), 3 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 17:55:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 528 transitions. [2024-09-12 17:55:06,286 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 528 transitions. Word has length 49 [2024-09-12 17:55:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:06,287 INFO L474 AbstractCegarLoop]: Abstraction has 431 states and 528 transitions. [2024-09-12 17:55:06,287 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 25 states have internal predecessors, (84), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:06,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 528 transitions. [2024-09-12 17:55:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 17:55:06,289 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:06,289 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2024-09-12 17:55:06,306 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 17:55:06,492 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 17:55:06,493 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:06,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:06,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2142913531, now seen corresponding path program 2 times [2024-09-12 17:55:06,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:06,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511244735] [2024-09-12 17:55:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:06,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:06,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-12 17:55:06,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:06,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511244735] [2024-09-12 17:55:06,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511244735] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:06,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846494714] [2024-09-12 17:55:06,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:55:06,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:06,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:06,707 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 17:55:06,709 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 17:55:06,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:55:06,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:06,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 17:55:06,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-12 17:55:06,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-09-12 17:55:06,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846494714] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:06,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:06,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 14 [2024-09-12 17:55:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517377454] [2024-09-12 17:55:06,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:06,952 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 17:55:06,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:06,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 17:55:06,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-12 17:55:06,953 INFO L87 Difference]: Start difference. First operand 431 states and 528 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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 17:55:07,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:07,275 INFO L93 Difference]: Finished difference Result 868 states and 1065 transitions. [2024-09-12 17:55:07,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 17:55:07,276 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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 54 [2024-09-12 17:55:07,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:07,278 INFO L225 Difference]: With dead ends: 868 [2024-09-12 17:55:07,279 INFO L226 Difference]: Without dead ends: 472 [2024-09-12 17:55:07,279 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-12 17:55:07,280 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:07,281 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 144 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:55:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-09-12 17:55:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2024-09-12 17:55:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 453 states have (on average 1.2273730684326711) internal successors, (556), 454 states have internal predecessors, (556), 3 states have call successors, (3), 3 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 17:55:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 560 transitions. [2024-09-12 17:55:07,506 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 560 transitions. Word has length 54 [2024-09-12 17:55:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:07,507 INFO L474 AbstractCegarLoop]: Abstraction has 459 states and 560 transitions. [2024-09-12 17:55:07,507 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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 17:55:07,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 560 transitions. [2024-09-12 17:55:07,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 17:55:07,509 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:07,509 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 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] [2024-09-12 17:55:07,528 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 17:55:07,710 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:07,710 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:07,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1068103626, now seen corresponding path program 3 times [2024-09-12 17:55:07,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:07,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911265967] [2024-09-12 17:55:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:07,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:09,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-12 17:55:09,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:09,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911265967] [2024-09-12 17:55:09,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911265967] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:09,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601831216] [2024-09-12 17:55:09,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 17:55:09,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:09,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:09,081 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 17:55:09,081 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 17:55:09,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 17:55:09,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:09,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-12 17:55:09,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:09,329 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 23 treesize of output 1 [2024-09-12 17:55:09,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:55:09,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 15 [2024-09-12 17:55:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-12 17:55:09,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-12 17:55:10,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601831216] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:10,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:10,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 14] total 46 [2024-09-12 17:55:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737536732] [2024-09-12 17:55:10,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:10,572 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 17:55:10,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 17:55:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1789, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 17:55:10,574 INFO L87 Difference]: Start difference. First operand 459 states and 560 transitions. Second operand has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 45 states have internal predecessors, (113), 2 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 17:55:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:13,363 INFO L93 Difference]: Finished difference Result 2258 states and 2864 transitions. [2024-09-12 17:55:13,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 17:55:13,364 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 45 states have internal predecessors, (113), 2 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 56 [2024-09-12 17:55:13,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:13,370 INFO L225 Difference]: With dead ends: 2258 [2024-09-12 17:55:13,370 INFO L226 Difference]: Without dead ends: 1862 [2024-09-12 17:55:13,372 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=972, Invalid=5834, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 17:55:13,372 INFO L434 NwaCegarLoop]: 95 mSDtfsCounter, 622 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:13,372 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1911 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 17:55:13,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2024-09-12 17:55:13,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 581. [2024-09-12 17:55:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 575 states have (on average 1.2347826086956522) internal successors, (710), 576 states have internal predecessors, (710), 3 states have call successors, (3), 3 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 17:55:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 714 transitions. [2024-09-12 17:55:13,709 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 714 transitions. Word has length 56 [2024-09-12 17:55:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:13,709 INFO L474 AbstractCegarLoop]: Abstraction has 581 states and 714 transitions. [2024-09-12 17:55:13,709 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 45 states have internal predecessors, (113), 2 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 17:55:13,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 714 transitions. [2024-09-12 17:55:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-12 17:55:13,711 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:13,711 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2024-09-12 17:55:13,723 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 17:55:13,911 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:13,911 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:13,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:13,912 INFO L85 PathProgramCache]: Analyzing trace with hash 452702270, now seen corresponding path program 3 times [2024-09-12 17:55:13,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:13,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800810970] [2024-09-12 17:55:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:14,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-12 17:55:14,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800810970] [2024-09-12 17:55:14,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800810970] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768611350] [2024-09-12 17:55:14,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 17:55:14,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:14,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:14,685 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 17:55:14,687 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 17:55:14,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 17:55:14,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:14,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 17:55:14,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-12 17:55:14,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:15,120 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-09-12 17:55:15,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 30 [2024-09-12 17:55:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-09-12 17:55:15,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768611350] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:15,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:15,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 24 [2024-09-12 17:55:15,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852035911] [2024-09-12 17:55:15,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:15,152 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 17:55:15,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:15,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 17:55:15,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-09-12 17:55:15,153 INFO L87 Difference]: Start difference. First operand 581 states and 714 transitions. Second operand has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 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 17:55:15,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:15,743 INFO L93 Difference]: Finished difference Result 942 states and 1164 transitions. [2024-09-12 17:55:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 17:55:15,743 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 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 57 [2024-09-12 17:55:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:15,746 INFO L225 Difference]: With dead ends: 942 [2024-09-12 17:55:15,746 INFO L226 Difference]: Without dead ends: 763 [2024-09-12 17:55:15,747 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2024-09-12 17:55:15,747 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 146 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:15,748 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 415 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:55:15,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-09-12 17:55:16,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 563. [2024-09-12 17:55:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 557 states have (on average 1.2351885098743267) internal successors, (688), 558 states have internal predecessors, (688), 3 states have call successors, (3), 3 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 17:55:16,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 692 transitions. [2024-09-12 17:55:16,072 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 692 transitions. Word has length 57 [2024-09-12 17:55:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:16,072 INFO L474 AbstractCegarLoop]: Abstraction has 563 states and 692 transitions. [2024-09-12 17:55:16,072 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 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 17:55:16,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 692 transitions. [2024-09-12 17:55:16,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 17:55:16,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:16,074 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:16,089 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 17:55:16,274 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 17:55:16,275 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:16,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1820387016, now seen corresponding path program 4 times [2024-09-12 17:55:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:16,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449168936] [2024-09-12 17:55:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:16,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:16,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-09-12 17:55:16,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:16,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449168936] [2024-09-12 17:55:16,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449168936] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:16,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185253388] [2024-09-12 17:55:16,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 17:55:16,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:16,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:16,499 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 17:55:16,501 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 17:55:16,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 17:55:16,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:16,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 17:55:16,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:16,954 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 16 treesize of output 8 [2024-09-12 17:55:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 17:55:16,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:17,343 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-09-12 17:55:17,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 31 [2024-09-12 17:55:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-09-12 17:55:17,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185253388] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:17,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:17,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17, 11] total 31 [2024-09-12 17:55:17,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285481038] [2024-09-12 17:55:17,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:17,423 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 17:55:17,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:17,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 17:55:17,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2024-09-12 17:55:17,424 INFO L87 Difference]: Start difference. First operand 563 states and 692 transitions. Second operand has 31 states, 31 states have (on average 3.870967741935484) internal successors, (120), 31 states have internal predecessors, (120), 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 17:55:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:19,452 INFO L93 Difference]: Finished difference Result 2457 states and 3127 transitions. [2024-09-12 17:55:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-12 17:55:19,453 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.870967741935484) internal successors, (120), 31 states have internal predecessors, (120), 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 61 [2024-09-12 17:55:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:19,461 INFO L225 Difference]: With dead ends: 2457 [2024-09-12 17:55:19,461 INFO L226 Difference]: Without dead ends: 2151 [2024-09-12 17:55:19,463 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=364, Invalid=2498, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 17:55:19,463 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 542 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:19,464 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1357 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 17:55:19,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2024-09-12 17:55:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 947. [2024-09-12 17:55:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 941 states have (on average 1.210414452709883) internal successors, (1139), 942 states have internal predecessors, (1139), 3 states have call successors, (3), 3 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 17:55:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1143 transitions. [2024-09-12 17:55:20,017 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1143 transitions. Word has length 61 [2024-09-12 17:55:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:20,017 INFO L474 AbstractCegarLoop]: Abstraction has 947 states and 1143 transitions. [2024-09-12 17:55:20,018 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.870967741935484) internal successors, (120), 31 states have internal predecessors, (120), 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 17:55:20,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1143 transitions. [2024-09-12 17:55:20,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-12 17:55:20,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:20,021 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 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] [2024-09-12 17:55:20,038 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 17:55:20,225 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 17:55:20,225 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:20,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash 450827596, now seen corresponding path program 4 times [2024-09-12 17:55:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:20,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658935701] [2024-09-12 17:55:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:20,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:21,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-12 17:55:21,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658935701] [2024-09-12 17:55:21,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658935701] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577092705] [2024-09-12 17:55:21,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 17:55:21,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:21,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:21,929 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 17:55:21,930 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 17:55:22,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 17:55:22,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:22,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 17:55:22,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:22,490 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 19 treesize of output 11 [2024-09-12 17:55:22,492 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 17:55:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 56 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 17:55:22,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:22,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:55:22,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 58 [2024-09-12 17:55:22,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:55:22,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 35 [2024-09-12 17:55:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 17 proven. 43 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-12 17:55:23,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577092705] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:23,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:23,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 15] total 43 [2024-09-12 17:55:23,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715637872] [2024-09-12 17:55:23,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:23,103 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-12 17:55:23,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:23,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-12 17:55:23,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1597, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 17:55:23,105 INFO L87 Difference]: Start difference. First operand 947 states and 1143 transitions. Second operand has 43 states, 43 states have (on average 3.13953488372093) internal successors, (135), 43 states have internal predecessors, (135), 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 17:55:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:26,453 INFO L93 Difference]: Finished difference Result 2615 states and 3179 transitions. [2024-09-12 17:55:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-12 17:55:26,454 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.13953488372093) internal successors, (135), 43 states have internal predecessors, (135), 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 66 [2024-09-12 17:55:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:26,461 INFO L225 Difference]: With dead ends: 2615 [2024-09-12 17:55:26,461 INFO L226 Difference]: Without dead ends: 1809 [2024-09-12 17:55:26,465 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1083, Invalid=7659, Unknown=0, NotChecked=0, Total=8742 [2024-09-12 17:55:26,466 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 396 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:26,466 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1380 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 17:55:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2024-09-12 17:55:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1410. [2024-09-12 17:55:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1404 states have (on average 1.1517094017094016) internal successors, (1617), 1405 states have internal predecessors, (1617), 3 states have call successors, (3), 3 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 17:55:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1621 transitions. [2024-09-12 17:55:27,289 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1621 transitions. Word has length 66 [2024-09-12 17:55:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:27,289 INFO L474 AbstractCegarLoop]: Abstraction has 1410 states and 1621 transitions. [2024-09-12 17:55:27,290 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.13953488372093) internal successors, (135), 43 states have internal predecessors, (135), 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 17:55:27,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1621 transitions. [2024-09-12 17:55:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 17:55:27,294 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:27,294 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-09-12 17:55:27,308 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 17:55:27,495 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 17:55:27,495 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:27,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1073898424, now seen corresponding path program 5 times [2024-09-12 17:55:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:27,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183517749] [2024-09-12 17:55:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:27,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:29,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-12 17:55:29,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:29,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183517749] [2024-09-12 17:55:29,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183517749] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:29,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846531267] [2024-09-12 17:55:29,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 17:55:29,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:29,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:29,612 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 17:55:29,613 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 17:55:30,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-12 17:55:30,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:30,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 17:55:30,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:30,044 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 51 treesize of output 38 [2024-09-12 17:55:30,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 1 [2024-09-12 17:55:30,233 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 14 [2024-09-12 17:55:30,236 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 20 treesize of output 8 [2024-09-12 17:55:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 49 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 17:55:30,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:30,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:55:30,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2024-09-12 17:55:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-12 17:55:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846531267] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:30,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:30,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 41 [2024-09-12 17:55:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790479192] [2024-09-12 17:55:30,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:30,806 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 17:55:30,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:30,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 17:55:30,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1429, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 17:55:30,807 INFO L87 Difference]: Start difference. First operand 1410 states and 1621 transitions. Second operand has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 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 17:55:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:33,176 INFO L93 Difference]: Finished difference Result 2284 states and 2646 transitions. [2024-09-12 17:55:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 17:55:33,176 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 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 68 [2024-09-12 17:55:33,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:33,183 INFO L225 Difference]: With dead ends: 2284 [2024-09-12 17:55:33,184 INFO L226 Difference]: Without dead ends: 2057 [2024-09-12 17:55:33,186 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=644, Invalid=4326, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 17:55:33,186 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 342 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:33,186 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 831 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 17:55:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2024-09-12 17:55:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1731. [2024-09-12 17:55:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1725 states have (on average 1.1478260869565218) internal successors, (1980), 1726 states have internal predecessors, (1980), 3 states have call successors, (3), 3 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 17:55:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 1984 transitions. [2024-09-12 17:55:34,183 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 1984 transitions. Word has length 68 [2024-09-12 17:55:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:34,183 INFO L474 AbstractCegarLoop]: Abstraction has 1731 states and 1984 transitions. [2024-09-12 17:55:34,183 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 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 17:55:34,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 1984 transitions. [2024-09-12 17:55:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 17:55:34,188 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:34,188 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-09-12 17:55:34,207 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 17:55:34,389 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 17:55:34,389 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:34,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1662457488, now seen corresponding path program 6 times [2024-09-12 17:55:34,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:34,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722537319] [2024-09-12 17:55:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:36,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 48 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-12 17:55:36,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722537319] [2024-09-12 17:55:36,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722537319] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140238907] [2024-09-12 17:55:36,467 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 17:55:36,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:36,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:36,469 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 17:55:36,471 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 17:55:36,651 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-09-12 17:55:36,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:36,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-09-12 17:55:36,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:36,724 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 48 treesize of output 35 [2024-09-12 17:55:36,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 1 [2024-09-12 17:55:37,588 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 16 treesize of output 8 [2024-09-12 17:55:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 61 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 17:55:37,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 46 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 17:55:38,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140238907] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:38,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:38,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 21] total 58 [2024-09-12 17:55:38,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989281114] [2024-09-12 17:55:38,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:38,957 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-12 17:55:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:38,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-12 17:55:38,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=2879, Unknown=0, NotChecked=0, Total=3306 [2024-09-12 17:55:38,958 INFO L87 Difference]: Start difference. First operand 1731 states and 1984 transitions. Second operand has 58 states, 58 states have (on average 2.7241379310344827) internal successors, (158), 57 states have internal predecessors, (158), 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 17:55:46,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:46,010 INFO L93 Difference]: Finished difference Result 2197 states and 2560 transitions. [2024-09-12 17:55:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-09-12 17:55:46,011 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.7241379310344827) internal successors, (158), 57 states have internal predecessors, (158), 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 68 [2024-09-12 17:55:46,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:46,017 INFO L225 Difference]: With dead ends: 2197 [2024-09-12 17:55:46,018 INFO L226 Difference]: Without dead ends: 2067 [2024-09-12 17:55:46,021 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4548 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2170, Invalid=13580, Unknown=0, NotChecked=0, Total=15750 [2024-09-12 17:55:46,021 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 452 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:46,021 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1254 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-12 17:55:46,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2024-09-12 17:55:46,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1717. [2024-09-12 17:55:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1711 states have (on average 1.146697837521917) internal successors, (1962), 1712 states have internal predecessors, (1962), 3 states have call successors, (3), 3 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 17:55:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 1966 transitions. [2024-09-12 17:55:47,006 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 1966 transitions. Word has length 68 [2024-09-12 17:55:47,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:47,006 INFO L474 AbstractCegarLoop]: Abstraction has 1717 states and 1966 transitions. [2024-09-12 17:55:47,006 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.7241379310344827) internal successors, (158), 57 states have internal predecessors, (158), 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 17:55:47,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 1966 transitions. [2024-09-12 17:55:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 17:55:47,011 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:47,011 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:47,029 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 17:55:47,211 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 17:55:47,212 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:47,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash 621871008, now seen corresponding path program 1 times [2024-09-12 17:55:47,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:47,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652265608] [2024-09-12 17:55:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:47,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-09-12 17:55:47,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:47,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652265608] [2024-09-12 17:55:47,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652265608] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:47,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710941498] [2024-09-12 17:55:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:47,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:47,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:47,406 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 17:55:47,407 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 17:55:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:47,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 17:55:47,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-09-12 17:55:47,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-09-12 17:55:47,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710941498] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:47,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:47,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-09-12 17:55:47,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103954580] [2024-09-12 17:55:47,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:47,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 17:55:47,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:47,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 17:55:47,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-09-12 17:55:47,718 INFO L87 Difference]: Start difference. First operand 1717 states and 1966 transitions. Second operand has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 24 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:48,878 INFO L93 Difference]: Finished difference Result 1812 states and 2096 transitions. [2024-09-12 17:55:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 17:55:48,878 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 24 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2024-09-12 17:55:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:48,886 INFO L225 Difference]: With dead ends: 1812 [2024-09-12 17:55:48,886 INFO L226 Difference]: Without dead ends: 1811 [2024-09-12 17:55:48,887 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-09-12 17:55:48,888 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 62 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:48,888 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 365 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:55:48,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2024-09-12 17:55:49,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1801. [2024-09-12 17:55:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1795 states have (on average 1.1532033426183843) internal successors, (2070), 1796 states have internal predecessors, (2070), 3 states have call successors, (3), 3 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 17:55:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2074 transitions. [2024-09-12 17:55:49,990 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2074 transitions. Word has length 69 [2024-09-12 17:55:49,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:49,990 INFO L474 AbstractCegarLoop]: Abstraction has 1801 states and 2074 transitions. [2024-09-12 17:55:49,990 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 24 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:49,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2074 transitions. [2024-09-12 17:55:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 17:55:49,994 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:49,994 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-09-12 17:55:50,012 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-12 17:55:50,198 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 17:55:50,199 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:50,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:50,199 INFO L85 PathProgramCache]: Analyzing trace with hash 580588358, now seen corresponding path program 2 times [2024-09-12 17:55:50,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:50,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278844007] [2024-09-12 17:55:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:50,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:50,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-12 17:55:50,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:50,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278844007] [2024-09-12 17:55:50,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278844007] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:50,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663135913] [2024-09-12 17:55:50,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:55:50,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:50,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:50,645 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 17:55:50,646 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 17:55:50,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:55:50,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:50,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-12 17:55:50,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-12 17:55:51,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:53,636 INFO L349 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2024-09-12 17:55:53,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 271 treesize of output 1 [2024-09-12 17:55:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-12 17:55:53,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663135913] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:53,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:53,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 19] total 48 [2024-09-12 17:55:53,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212171632] [2024-09-12 17:55:53,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:53,647 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 17:55:53,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:53,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 17:55:53,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2020, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 17:55:53,648 INFO L87 Difference]: Start difference. First operand 1801 states and 2074 transitions. Second operand has 48 states, 48 states have (on average 2.9375) internal successors, (141), 47 states have internal predecessors, (141), 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 17:56:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:56:23,673 INFO L93 Difference]: Finished difference Result 4556 states and 5578 transitions. [2024-09-12 17:56:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2024-09-12 17:56:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.9375) internal successors, (141), 47 states have internal predecessors, (141), 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 72 [2024-09-12 17:56:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:56:23,684 INFO L225 Difference]: With dead ends: 4556 [2024-09-12 17:56:23,684 INFO L226 Difference]: Without dead ends: 3882 [2024-09-12 17:56:23,689 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20079 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=5433, Invalid=51448, Unknown=1, NotChecked=0, Total=56882 [2024-09-12 17:56:23,690 INFO L434 NwaCegarLoop]: 114 mSDtfsCounter, 1095 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 5781 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 5884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 5781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:56:23,690 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 2442 Invalid, 5884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 5781 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-09-12 17:56:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2024-09-12 17:56:25,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3094. [2024-09-12 17:56:25,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 3088 states have (on average 1.2192357512953367) internal successors, (3765), 3089 states have internal predecessors, (3765), 3 states have call successors, (3), 3 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 17:56:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 3769 transitions. [2024-09-12 17:56:25,756 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 3769 transitions. Word has length 72 [2024-09-12 17:56:25,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:56:25,756 INFO L474 AbstractCegarLoop]: Abstraction has 3094 states and 3769 transitions. [2024-09-12 17:56:25,756 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.9375) internal successors, (141), 47 states have internal predecessors, (141), 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 17:56:25,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:56:25,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 3769 transitions. [2024-09-12 17:56:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-12 17:56:25,762 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:56:25,762 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:56:25,781 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 17:56:25,966 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 17:56:25,967 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:56:25,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:56:25,967 INFO L85 PathProgramCache]: Analyzing trace with hash -8503677, now seen corresponding path program 7 times [2024-09-12 17:56:25,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:56:25,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904869329] [2024-09-12 17:56:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:56:25,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:56:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:56:26,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:56:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:56:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-09-12 17:56:26,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:56:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904869329] [2024-09-12 17:56:26,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904869329] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:56:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150231520] [2024-09-12 17:56:26,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 17:56:26,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:56:26,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:56:26,244 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 17:56:26,245 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 17:56:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:56:26,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 17:56:26,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:56:26,751 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 16 treesize of output 8 [2024-09-12 17:56:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-12 17:56:26,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:56:27,230 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-09-12 17:56:27,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 31 [2024-09-12 17:56:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 1 proven. 85 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 17:56:27,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150231520] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:56:27,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:56:27,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 13] total 35 [2024-09-12 17:56:27,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686982442] [2024-09-12 17:56:27,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:56:27,328 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 17:56:27,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:56:27,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 17:56:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 17:56:27,328 INFO L87 Difference]: Start difference. First operand 3094 states and 3769 transitions. Second operand has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 35 states have internal predecessors, (138), 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 17:56:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:56:34,907 INFO L93 Difference]: Finished difference Result 12029 states and 15544 transitions. [2024-09-12 17:56:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 17:56:34,907 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 35 states have internal predecessors, (138), 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 73 [2024-09-12 17:56:34,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:56:34,940 INFO L225 Difference]: With dead ends: 12029 [2024-09-12 17:56:34,940 INFO L226 Difference]: Without dead ends: 9514 [2024-09-12 17:56:34,948 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=240, Invalid=2112, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 17:56:34,949 INFO L434 NwaCegarLoop]: 86 mSDtfsCounter, 524 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 17:56:34,949 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1565 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 17:56:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9514 states. [2024-09-12 17:56:38,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9514 to 5141. [2024-09-12 17:56:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5135 states have (on average 1.2075949367088608) internal successors, (6201), 5136 states have internal predecessors, (6201), 3 states have call successors, (3), 3 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 17:56:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 6205 transitions. [2024-09-12 17:56:38,807 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 6205 transitions. Word has length 73 [2024-09-12 17:56:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:56:38,807 INFO L474 AbstractCegarLoop]: Abstraction has 5141 states and 6205 transitions. [2024-09-12 17:56:38,808 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.942857142857143) internal successors, (138), 35 states have internal predecessors, (138), 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 17:56:38,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:56:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 6205 transitions. [2024-09-12 17:56:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-12 17:56:38,817 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:56:38,817 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:56:38,834 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 17:56:39,021 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 17:56:39,022 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:56:39,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:56:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash 469789964, now seen corresponding path program 3 times [2024-09-12 17:56:39,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:56:39,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111722475] [2024-09-12 17:56:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:56:39,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:56:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:56:39,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:56:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:56:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-09-12 17:56:39,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:56:39,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111722475] [2024-09-12 17:56:39,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111722475] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:56:39,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519918338] [2024-09-12 17:56:39,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 17:56:39,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:56:39,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:56:39,576 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 17:56:39,577 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 17:56:39,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 17:56:39,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:56:39,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 17:56:39,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:56:40,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-09-12 17:56:40,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:56:40,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2024-09-12 17:56:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 19 proven. 36 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-09-12 17:56:40,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:56:40,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:56:40,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 59 [2024-09-12 17:56:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-12 17:56:40,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519918338] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:56:40,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:56:40,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 11] total 37 [2024-09-12 17:56:40,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521580062] [2024-09-12 17:56:40,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:56:40,823 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 17:56:40,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:56:40,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 17:56:40,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 17:56:40,824 INFO L87 Difference]: Start difference. First operand 5141 states and 6205 transitions. Second operand has 37 states, 37 states have (on average 4.081081081081081) internal successors, (151), 36 states have internal predecessors, (151), 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 17:57:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:57:04,985 INFO L93 Difference]: Finished difference Result 8995 states and 11004 transitions. [2024-09-12 17:57:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 395 states. [2024-09-12 17:57:04,986 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.081081081081081) internal successors, (151), 36 states have internal predecessors, (151), 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 74 [2024-09-12 17:57:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:57:05,001 INFO L225 Difference]: With dead ends: 8995 [2024-09-12 17:57:05,001 INFO L226 Difference]: Without dead ends: 7426 [2024-09-12 17:57:05,014 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 418 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74606 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=7952, Invalid=168028, Unknown=0, NotChecked=0, Total=175980 [2024-09-12 17:57:05,015 INFO L434 NwaCegarLoop]: 122 mSDtfsCounter, 1789 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 8989 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 9086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 8989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-09-12 17:57:05,015 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 2352 Invalid, 9086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 8989 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-09-12 17:57:05,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2024-09-12 17:57:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 5042. [2024-09-12 17:57:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5042 states, 5036 states have (on average 1.2190230341540906) internal successors, (6139), 5037 states have internal predecessors, (6139), 3 states have call successors, (3), 3 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 17:57:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 6143 transitions. [2024-09-12 17:57:08,864 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 6143 transitions. Word has length 74 [2024-09-12 17:57:08,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:57:08,865 INFO L474 AbstractCegarLoop]: Abstraction has 5042 states and 6143 transitions. [2024-09-12 17:57:08,865 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.081081081081081) internal successors, (151), 36 states have internal predecessors, (151), 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 17:57:08,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:08,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 6143 transitions. [2024-09-12 17:57:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 17:57:08,870 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:57:08,870 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:57:08,883 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-12 17:57:09,070 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:57:09,071 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:57:09,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:09,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1965316002, now seen corresponding path program 8 times [2024-09-12 17:57:09,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:57:09,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484379026] [2024-09-12 17:57:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:57:09,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:57:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:57:09,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:57:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:57:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 42 proven. 50 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-09-12 17:57:09,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:57:09,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484379026] [2024-09-12 17:57:09,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484379026] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:57:09,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617514995] [2024-09-12 17:57:09,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:57:09,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:57:09,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:57:09,968 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:57:09,969 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 17:57:10,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:57:10,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:57:10,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 17:57:10,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:57:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-12 17:57:10,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:57:10,580 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-09-12 17:57:10,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 30 [2024-09-12 17:57:10,632 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-12 17:57:10,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617514995] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:57:10,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:57:10,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 11] total 29 [2024-09-12 17:57:10,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492597748] [2024-09-12 17:57:10,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:57:10,633 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 17:57:10,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:57:10,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 17:57:10,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2024-09-12 17:57:10,634 INFO L87 Difference]: Start difference. First operand 5042 states and 6143 transitions. Second operand has 29 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 29 states have internal predecessors, (109), 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 17:57:15,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:57:15,393 INFO L93 Difference]: Finished difference Result 6070 states and 7487 transitions. [2024-09-12 17:57:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 17:57:15,394 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 29 states have internal predecessors, (109), 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 78 [2024-09-12 17:57:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:57:15,407 INFO L225 Difference]: With dead ends: 6070 [2024-09-12 17:57:15,408 INFO L226 Difference]: Without dead ends: 5611 [2024-09-12 17:57:15,410 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 17:57:15,411 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 137 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 17:57:15,411 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 985 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 17:57:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2024-09-12 17:57:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 4899. [2024-09-12 17:57:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 4893 states have (on average 1.2235847128550992) internal successors, (5987), 4894 states have internal predecessors, (5987), 3 states have call successors, (3), 3 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 17:57:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 5991 transitions. [2024-09-12 17:57:19,131 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 5991 transitions. Word has length 78 [2024-09-12 17:57:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:57:19,132 INFO L474 AbstractCegarLoop]: Abstraction has 4899 states and 5991 transitions. [2024-09-12 17:57:19,132 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 29 states have internal predecessors, (109), 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 17:57:19,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 5991 transitions. [2024-09-12 17:57:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-12 17:57:19,140 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:57:19,140 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 6, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:57:19,158 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-12 17:57:19,341 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:57:19,341 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:57:19,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:19,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1828988674, now seen corresponding path program 9 times [2024-09-12 17:57:19,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:57:19,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071003729] [2024-09-12 17:57:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:57:19,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:57:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:57:19,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:57:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:57:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-09-12 17:57:19,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:57:19,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071003729] [2024-09-12 17:57:19,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071003729] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:57:19,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827658113] [2024-09-12 17:57:19,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 17:57:19,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:57:19,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:57:19,586 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:57:19,588 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 17:57:19,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-12 17:57:19,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:57:19,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-12 17:57:19,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:57:19,832 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 51 treesize of output 38 [2024-09-12 17:57:19,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 1 [2024-09-12 17:57:19,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:57:19,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 34 [2024-09-12 17:57:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-09-12 17:57:20,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:57:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 16 proven. 44 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-09-12 17:57:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827658113] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:57:20,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:57:20,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 14] total 35 [2024-09-12 17:57:20,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977534530] [2024-09-12 17:57:20,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:57:20,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 17:57:20,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:57:20,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 17:57:20,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 17:57:20,393 INFO L87 Difference]: Start difference. First operand 4899 states and 5991 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 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 17:57:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:57:27,109 INFO L93 Difference]: Finished difference Result 8966 states and 11423 transitions. [2024-09-12 17:57:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 17:57:27,110 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 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 85 [2024-09-12 17:57:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:57:27,130 INFO L225 Difference]: With dead ends: 8966 [2024-09-12 17:57:27,130 INFO L226 Difference]: Without dead ends: 7488 [2024-09-12 17:57:27,136 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=636, Invalid=2786, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 17:57:27,136 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 670 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 17:57:27,136 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 921 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 17:57:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7488 states. [2024-09-12 17:57:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7488 to 4856. [2024-09-12 17:57:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 4850 states have (on average 1.2245360824742269) internal successors, (5939), 4851 states have internal predecessors, (5939), 3 states have call successors, (3), 3 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 17:57:31,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 5943 transitions. [2024-09-12 17:57:31,071 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 5943 transitions. Word has length 85 [2024-09-12 17:57:31,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:57:31,072 INFO L474 AbstractCegarLoop]: Abstraction has 4856 states and 5943 transitions. [2024-09-12 17:57:31,072 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 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 17:57:31,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:31,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 5943 transitions. [2024-09-12 17:57:31,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 17:57:31,080 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:57:31,080 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:57:31,100 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-12 17:57:31,281 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:57:31,281 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:57:31,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1314208124, now seen corresponding path program 5 times [2024-09-12 17:57:31,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:57:31,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185110456] [2024-09-12 17:57:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:57:31,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:57:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:57:33,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:57:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:57:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 35 proven. 110 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-12 17:57:33,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:57:33,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185110456] [2024-09-12 17:57:33,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185110456] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:57:33,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741957419] [2024-09-12 17:57:33,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 17:57:33,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:57:33,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:57:33,033 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:57:33,034 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 17:57:33,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-12 17:57:33,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:57:33,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 17:57:33,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:57:33,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:57:33,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 150 [2024-09-12 17:57:33,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:57:33,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 52 [2024-09-12 17:57:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 57 proven. 12 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-09-12 17:57:34,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:57:35,082 INFO L349 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2024-09-12 17:57:35,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 188 treesize of output 1 [2024-09-12 17:57:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-09-12 17:57:35,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741957419] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:57:35,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:57:35,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 43 [2024-09-12 17:57:35,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339161232] [2024-09-12 17:57:35,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:57:35,086 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-12 17:57:35,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:57:35,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-12 17:57:35,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1588, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 17:57:35,087 INFO L87 Difference]: Start difference. First operand 4856 states and 5943 transitions. Second operand has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 43 states have internal predecessors, (118), 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 17:57:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:57:53,115 INFO L93 Difference]: Finished difference Result 14155 states and 17353 transitions. [2024-09-12 17:57:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-09-12 17:57:53,116 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 43 states have internal predecessors, (118), 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 87 [2024-09-12 17:57:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:57:53,140 INFO L225 Difference]: With dead ends: 14155 [2024-09-12 17:57:53,140 INFO L226 Difference]: Without dead ends: 10260 [2024-09-12 17:57:53,150 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9538 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2641, Invalid=24419, Unknown=0, NotChecked=0, Total=27060 [2024-09-12 17:57:53,150 INFO L434 NwaCegarLoop]: 74 mSDtfsCounter, 514 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2601 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-12 17:57:53,151 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1601 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2601 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-12 17:57:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10260 states. [2024-09-12 17:57:58,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10260 to 5464. [2024-09-12 17:57:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5464 states, 5458 states have (on average 1.1960425064126055) internal successors, (6528), 5459 states have internal predecessors, (6528), 3 states have call successors, (3), 3 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 17:57:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5464 states to 5464 states and 6532 transitions. [2024-09-12 17:57:58,580 INFO L78 Accepts]: Start accepts. Automaton has 5464 states and 6532 transitions. Word has length 87 [2024-09-12 17:57:58,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:57:58,581 INFO L474 AbstractCegarLoop]: Abstraction has 5464 states and 6532 transitions. [2024-09-12 17:57:58,581 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 43 states have internal predecessors, (118), 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 17:57:58,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand 5464 states and 6532 transitions. [2024-09-12 17:57:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 17:57:58,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:57:58,590 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:57:58,607 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-12 17:57:58,790 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:57:58,791 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:57:58,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:58,791 INFO L85 PathProgramCache]: Analyzing trace with hash -420721786, now seen corresponding path program 6 times [2024-09-12 17:57:58,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:57:58,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751076090] [2024-09-12 17:57:58,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:57:58,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:57:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:58:00,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:58:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:58:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 47 proven. 82 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-09-12 17:58:00,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:58:00,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751076090] [2024-09-12 17:58:00,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751076090] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:58:00,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814614355] [2024-09-12 17:58:00,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 17:58:00,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:58:00,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:58:00,551 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:58:00,552 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 17:58:00,765 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-12 17:58:00,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:58:00,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-12 17:58:00,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:58:00,841 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 48 treesize of output 35 [2024-09-12 17:58:00,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 1 [2024-09-12 17:58:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 47 proven. 71 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-09-12 17:58:01,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:58:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-12 17:58:01,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814614355] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:58:01,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:58:01,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 12] total 41 [2024-09-12 17:58:01,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210000990] [2024-09-12 17:58:01,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:58:01,900 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 17:58:01,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:58:01,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 17:58:01,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1372, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 17:58:01,901 INFO L87 Difference]: Start difference. First operand 5464 states and 6532 transitions. Second operand has 41 states, 41 states have (on average 3.5121951219512195) internal successors, (144), 41 states have internal predecessors, (144), 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 17:58:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:58:08,915 INFO L93 Difference]: Finished difference Result 7372 states and 8784 transitions. [2024-09-12 17:58:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 17:58:08,916 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.5121951219512195) internal successors, (144), 41 states have internal predecessors, (144), 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 87 [2024-09-12 17:58:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:58:08,932 INFO L225 Difference]: With dead ends: 7372 [2024-09-12 17:58:08,933 INFO L226 Difference]: Without dead ends: 5819 [2024-09-12 17:58:08,937 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=458, Invalid=2512, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 17:58:08,937 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 281 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 17:58:08,937 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 655 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 17:58:08,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5819 states. [2024-09-12 17:58:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5819 to 5197. [2024-09-12 17:58:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5191 states have (on average 1.192833750722404) internal successors, (6192), 5192 states have internal predecessors, (6192), 3 states have call successors, (3), 3 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 17:58:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 6196 transitions. [2024-09-12 17:58:14,089 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 6196 transitions. Word has length 87 [2024-09-12 17:58:14,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:58:14,089 INFO L474 AbstractCegarLoop]: Abstraction has 5197 states and 6196 transitions. [2024-09-12 17:58:14,090 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.5121951219512195) internal successors, (144), 41 states have internal predecessors, (144), 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 17:58:14,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:58:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 6196 transitions. [2024-09-12 17:58:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 17:58:14,095 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:58:14,095 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:58:14,109 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-12 17:58:14,296 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 17:58:14,296 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:58:14,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:58:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash 455297220, now seen corresponding path program 7 times [2024-09-12 17:58:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:58:14,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202653716] [2024-09-12 17:58:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:58:14,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:58:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:58:16,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:58:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:58:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 21 proven. 127 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-12 17:58:16,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:58:16,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202653716] [2024-09-12 17:58:16,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202653716] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:58:16,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118609521] [2024-09-12 17:58:16,821 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 17:58:16,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:58:16,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:58:16,823 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:58:16,824 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-12 17:58:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:58:16,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-12 17:58:16,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:58:17,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 17:58:17,639 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 17:58:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 21 proven. 146 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 17:58:17,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:58:18,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:58:18,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 58 [2024-09-12 17:58:18,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:58:18,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 35 [2024-09-12 17:58:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 25 proven. 116 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-12 17:58:18,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118609521] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:58:18,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:58:18,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 17] total 54 [2024-09-12 17:58:18,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009295712] [2024-09-12 17:58:18,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:58:18,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-12 17:58:18,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:58:18,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-12 17:58:18,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2538, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 17:58:18,467 INFO L87 Difference]: Start difference. First operand 5197 states and 6196 transitions. Second operand has 54 states, 54 states have (on average 3.037037037037037) internal successors, (164), 54 states have internal predecessors, (164), 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 17:58:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:58:29,066 INFO L93 Difference]: Finished difference Result 12159 states and 14650 transitions. [2024-09-12 17:58:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-12 17:58:29,067 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.037037037037037) internal successors, (164), 54 states have internal predecessors, (164), 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 87 [2024-09-12 17:58:29,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:58:29,091 INFO L225 Difference]: With dead ends: 12159 [2024-09-12 17:58:29,091 INFO L226 Difference]: Without dead ends: 7927 [2024-09-12 17:58:29,101 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=687, Invalid=4425, Unknown=0, NotChecked=0, Total=5112 [2024-09-12 17:58:29,102 INFO L434 NwaCegarLoop]: 95 mSDtfsCounter, 361 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:58:29,102 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1578 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 17:58:29,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7927 states. [2024-09-12 17:58:35,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7927 to 5826. [2024-09-12 17:58:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5826 states, 5820 states have (on average 1.1900343642611684) internal successors, (6926), 5821 states have internal predecessors, (6926), 3 states have call successors, (3), 3 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 17:58:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 6930 transitions. [2024-09-12 17:58:35,114 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 6930 transitions. Word has length 87 [2024-09-12 17:58:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:58:35,115 INFO L474 AbstractCegarLoop]: Abstraction has 5826 states and 6930 transitions. [2024-09-12 17:58:35,115 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.037037037037037) internal successors, (164), 54 states have internal predecessors, (164), 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 17:58:35,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:58:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 6930 transitions. [2024-09-12 17:58:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-09-12 17:58:35,121 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:58:35,121 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:58:35,134 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-12 17:58:35,321 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 17:58:35,322 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:58:35,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:58:35,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1538493122, now seen corresponding path program 10 times [2024-09-12 17:58:35,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:58:35,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680740365] [2024-09-12 17:58:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:58:35,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:58:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:58:37,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:58:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:58:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 35 proven. 110 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-12 17:58:37,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:58:37,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680740365] [2024-09-12 17:58:37,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680740365] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:58:37,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105218912] [2024-09-12 17:58:37,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 17:58:37,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:58:37,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:58:37,336 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:58:37,336 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-12 17:58:37,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 17:58:37,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:58:37,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-12 17:58:37,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:58:38,103 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 20 treesize of output 12 [2024-09-12 17:58:38,104 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 16 treesize of output 8 [2024-09-12 17:58:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 35 proven. 121 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-12 17:58:38,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:58:38,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:58:38,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 40 [2024-09-12 17:58:38,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 17:58:38,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2024-09-12 17:58:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 36 proven. 96 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-12 17:58:38,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105218912] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:58:38,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:58:38,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 15] total 48 [2024-09-12 17:58:38,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673037767] [2024-09-12 17:58:38,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:58:38,811 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 17:58:38,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:58:38,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 17:58:38,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1988, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 17:58:38,812 INFO L87 Difference]: Start difference. First operand 5826 states and 6930 transitions. Second operand has 48 states, 48 states have (on average 3.375) internal successors, (162), 48 states have internal predecessors, (162), 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)