./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_array_index_value_2.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 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/loop-crafted/simple_array_index_value_2.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 6dcb150490c6daa5a1cdb1426c8815f073186f609bef3d7e722a6c72be49ca91 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-12 21:15:43,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 21:15:43,418 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 21:15:43,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 21:15:43,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 21:15:43,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 21:15:43,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 21:15:43,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 21:15:43,442 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 21:15:43,443 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 21:15:43,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 21:15:43,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 21:15:43,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 21:15:43,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 21:15:43,445 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 21:15:43,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 21:15:43,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 21:15:43,445 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 21:15:43,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 21:15:43,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 21:15:43,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 21:15:43,450 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 21:15:43,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 21:15:43,451 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 21:15:43,451 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 21:15:43,451 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 21:15:43,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 21:15:43,451 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 21:15:43,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 21:15:43,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 21:15:43,452 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 21:15:43,452 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 21:15:43,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:15:43,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 21:15:43,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 21:15:43,453 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 21:15:43,453 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 21:15:43,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 21:15:43,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 21:15:43,454 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 21:15:43,454 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 21:15:43,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 21:15:43,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dcb150490c6daa5a1cdb1426c8815f073186f609bef3d7e722a6c72be49ca91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 21:15:43,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 21:15:43,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 21:15:43,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 21:15:43,729 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 21:15:43,730 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 21:15:43,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i [2024-09-12 21:15:45,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 21:15:45,305 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 21:15:45,307 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i [2024-09-12 21:15:45,317 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/a6967af54/0c1defd699214716a1894e2e1f7f9efd/FLAG2ccbff06f [2024-09-12 21:15:45,334 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/a6967af54/0c1defd699214716a1894e2e1f7f9efd [2024-09-12 21:15:45,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 21:15:45,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 21:15:45,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 21:15:45,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 21:15:45,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 21:15:45,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ff9d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45, skipping insertion in model container [2024-09-12 21:15:45,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,375 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 21:15:45,554 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/loop-crafted/simple_array_index_value_2.i[919,932] [2024-09-12 21:15:45,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:15:45,590 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 21:15:45,605 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/loop-crafted/simple_array_index_value_2.i[919,932] [2024-09-12 21:15:45,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:15:45,628 INFO L204 MainTranslator]: Completed translation [2024-09-12 21:15:45,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45 WrapperNode [2024-09-12 21:15:45,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 21:15:45,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 21:15:45,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 21:15:45,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 21:15:45,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,653 INFO L138 Inliner]: procedures = 17, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 21:15:45,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 21:15:45,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 21:15:45,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 21:15:45,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 21:15:45,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,691 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-09-12 21:15:45,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 21:15:45,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 21:15:45,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 21:15:45,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 21:15:45,712 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (1/1) ... [2024-09-12 21:15:45,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:15:45,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:15:45,744 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 21:15:45,747 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 21:15:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 21:15:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 21:15:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 21:15:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 21:15:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 21:15:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 21:15:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 21:15:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 21:15:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 21:15:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 21:15:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 21:15:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 21:15:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 21:15:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 21:15:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 21:15:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 21:15:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 21:15:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 21:15:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 21:15:45,855 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 21:15:45,857 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 21:15:46,001 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-12 21:15:46,001 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 21:15:46,032 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 21:15:46,033 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 21:15:46,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:15:46 BoogieIcfgContainer [2024-09-12 21:15:46,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 21:15:46,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 21:15:46,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 21:15:46,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 21:15:46,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 09:15:45" (1/3) ... [2024-09-12 21:15:46,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625a80ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:15:46, skipping insertion in model container [2024-09-12 21:15:46,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:15:45" (2/3) ... [2024-09-12 21:15:46,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625a80ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:15:46, skipping insertion in model container [2024-09-12 21:15:46,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:15:46" (3/3) ... [2024-09-12 21:15:46,055 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2024-09-12 21:15:46,069 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 21:15:46,069 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 21:15:46,133 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 21:15:46,141 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;@470f7ada, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 21:15:46,142 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 21:15:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:15:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 21:15:46,154 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:15:46,155 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:15:46,155 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:15:46,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:15:46,163 INFO L85 PathProgramCache]: Analyzing trace with hash 302093044, now seen corresponding path program 1 times [2024-09-12 21:15:46,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:15:46,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469956107] [2024-09-12 21:15:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:15:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:15:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:46,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:15:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:46,322 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 21:15:46,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:15:46,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469956107] [2024-09-12 21:15:46,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469956107] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:15:46,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:15:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 21:15:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321675603] [2024-09-12 21:15:46,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:15:46,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 21:15:46,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:15:46,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 21:15:46,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 21:15:46,355 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (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 21:15:46,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:15:46,391 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-09-12 21:15:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 21:15:46,393 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (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 12 [2024-09-12 21:15:46,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:15:46,398 INFO L225 Difference]: With dead ends: 47 [2024-09-12 21:15:46,399 INFO L226 Difference]: Without dead ends: 22 [2024-09-12 21:15:46,401 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 21:15:46,404 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:15:46,405 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:15:46,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-12 21:15:46,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-12 21:15:46,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:15:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-09-12 21:15:46,436 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2024-09-12 21:15:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:15:46,436 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-09-12 21:15:46,436 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (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 21:15:46,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:15:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-09-12 21:15:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 21:15:46,438 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:15:46,438 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:15:46,438 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 21:15:46,438 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:15:46,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:15:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1791998188, now seen corresponding path program 1 times [2024-09-12 21:15:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:15:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264209684] [2024-09-12 21:15:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:15:46,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:15:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:46,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:15:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:46,594 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 21:15:46,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:15:46,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264209684] [2024-09-12 21:15:46,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264209684] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:15:46,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:15:46,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 21:15:46,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954153844] [2024-09-12 21:15:46,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:15:46,597 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 21:15:46,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:15:46,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 21:15:46,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 21:15:46,599 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 21:15:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:15:46,630 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-09-12 21:15:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 21:15:46,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 12 [2024-09-12 21:15:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:15:46,633 INFO L225 Difference]: With dead ends: 38 [2024-09-12 21:15:46,633 INFO L226 Difference]: Without dead ends: 28 [2024-09-12 21:15:46,633 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 21:15:46,635 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:15:46,635 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:15:46,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-12 21:15:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-09-12 21:15:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:15:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-12 21:15:46,644 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2024-09-12 21:15:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:15:46,644 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-12 21:15:46,644 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 21:15:46,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:15:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-12 21:15:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 21:15:46,645 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:15:46,645 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 21:15:46,646 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 21:15:46,646 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:15:46,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:15:46,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1348305993, now seen corresponding path program 1 times [2024-09-12 21:15:46,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:15:46,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400045967] [2024-09-12 21:15:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:15:46,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:15:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:46,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:15:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:46,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 21:15:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:46,863 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 21:15:46,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:15:46,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400045967] [2024-09-12 21:15:46,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400045967] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:15:46,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41816159] [2024-09-12 21:15:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:15:46,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:15:46,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:15:46,866 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 21:15:46,868 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 21:15:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:46,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 21:15:46,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:15:46,976 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 21:15:46,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:15:47,034 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 21:15:47,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41816159] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:15:47,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:15:47,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-12 21:15:47,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790034232] [2024-09-12 21:15:47,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:15:47,039 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 21:15:47,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:15:47,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 21:15:47,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-12 21:15:47,041 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:15:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:15:47,142 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2024-09-12 21:15:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 21:15:47,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2024-09-12 21:15:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:15:47,144 INFO L225 Difference]: With dead ends: 52 [2024-09-12 21:15:47,145 INFO L226 Difference]: Without dead ends: 42 [2024-09-12 21:15:47,145 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-09-12 21:15:47,147 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:15:47,149 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 82 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:15:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-12 21:15:47,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-09-12 21:15:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:15:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-12 21:15:47,165 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2024-09-12 21:15:47,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:15:47,166 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-12 21:15:47,166 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:15:47,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:15:47,167 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-12 21:15:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 21:15:47,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:15:47,170 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:15:47,188 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 21:15:47,374 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 21:15:47,375 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:15:47,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:15:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash 142257068, now seen corresponding path program 2 times [2024-09-12 21:15:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:15:47,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287884112] [2024-09-12 21:15:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:15:47,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:15:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:47,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:15:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:47,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 21:15:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:47,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:15:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:47,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:15:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:47,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:15:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:15:47,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:15:47,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287884112] [2024-09-12 21:15:47,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287884112] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:15:47,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959915857] [2024-09-12 21:15:47,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:15:47,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:15:47,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:15:47,813 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 21:15:47,815 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 21:15:47,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:15:47,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:15:47,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 21:15:47,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:15:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:15:47,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:15:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:15:48,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959915857] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:15:48,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:15:48,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-12 21:15:48,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402962615] [2024-09-12 21:15:48,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:15:48,114 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 21:15:48,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:15:48,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 21:15:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-09-12 21:15:48,117 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:15:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:15:48,580 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2024-09-12 21:15:48,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 21:15:48,580 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 40 [2024-09-12 21:15:48,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:15:48,582 INFO L225 Difference]: With dead ends: 88 [2024-09-12 21:15:48,583 INFO L226 Difference]: Without dead ends: 78 [2024-09-12 21:15:48,585 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-09-12 21:15:48,586 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:15:48,587 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 160 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:15:48,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-12 21:15:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2024-09-12 21:15:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:15:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-09-12 21:15:48,613 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 40 [2024-09-12 21:15:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:15:48,614 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-09-12 21:15:48,614 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:15:48,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:15:48,615 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-09-12 21:15:48,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-12 21:15:48,617 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:15:48,617 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:15:48,633 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 21:15:48,822 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:15:48,823 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:15:48,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:15:48,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1112716340, now seen corresponding path program 3 times [2024-09-12 21:15:48,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:15:48,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317430909] [2024-09-12 21:15:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:15:48,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:15:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:15:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 21:15:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:15:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:15:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:15:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:15:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:15:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:15:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:15:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:15:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:15:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:15:49,340 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:15:49,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:15:49,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317430909] [2024-09-12 21:15:49,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317430909] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:15:49,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447056964] [2024-09-12 21:15:49,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:15:49,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:15:49,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:15:49,343 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 21:15:49,345 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 21:15:58,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 21:15:58,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:15:58,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-12 21:15:58,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:15:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:15:58,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:15:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:15:59,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447056964] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:15:59,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:15:59,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-09-12 21:15:59,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092768275] [2024-09-12 21:15:59,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:15:59,316 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 21:15:59,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:15:59,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 21:15:59,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-12 21:15:59,320 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:16:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:16:02,610 INFO L93 Difference]: Finished difference Result 160 states and 215 transitions. [2024-09-12 21:16:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 21:16:02,611 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 82 [2024-09-12 21:16:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:16:02,613 INFO L225 Difference]: With dead ends: 160 [2024-09-12 21:16:02,613 INFO L226 Difference]: Without dead ends: 150 [2024-09-12 21:16:02,613 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 21:16:02,615 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 96 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 21:16:02,617 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 586 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 21:16:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-12 21:16:02,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 86. [2024-09-12 21:16:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:16:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2024-09-12 21:16:02,639 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 82 [2024-09-12 21:16:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:16:02,639 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2024-09-12 21:16:02,640 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 25 states have internal predecessors, (55), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:16:02,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:16:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2024-09-12 21:16:02,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-09-12 21:16:02,646 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:16:02,647 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:16:02,666 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 21:16:02,847 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:16:02,848 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:16:02,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:16:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1141500916, now seen corresponding path program 4 times [2024-09-12 21:16:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:16:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213246678] [2024-09-12 21:16:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:16:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:16:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:16:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 21:16:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:16:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:16:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:16:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:16:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:16:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:16:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:16:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:16:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:16:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:16:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:16:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:16:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:16:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:16:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:16:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:16:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:16:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 21:16:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:16:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 21:16:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:16:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 21:16:03,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:16:03,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213246678] [2024-09-12 21:16:03,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213246678] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:16:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254942620] [2024-09-12 21:16:03,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:16:03,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:16:03,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:16:03,943 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 21:16:03,943 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 21:16:04,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:16:04,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:16:04,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-09-12 21:16:04,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:16:04,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 21:16:04,657 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:04,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:05,049 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:05,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:05,322 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:05,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:05,634 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:05,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:05,917 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:05,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:06,094 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:06,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:06,486 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:06,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:06,700 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:06,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:07,280 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:07,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:07,732 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:07,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:07,919 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:07,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:08,340 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:08,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:08,678 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:08,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:08,845 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:08,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:09,001 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:09,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:09,462 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:09,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:09,804 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:09,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:09,993 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:09,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:10,388 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:10,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:10,580 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:10,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:10,767 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-12 21:16:10,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-12 21:16:10,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-09-12 21:16:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 84 proven. 64 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2024-09-12 21:16:10,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:16:15,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254942620] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:16:15,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:16:15,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16] total 38 [2024-09-12 21:16:15,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780568094] [2024-09-12 21:16:15,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:16:15,263 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 21:16:15,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:16:15,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 21:16:15,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1751, Unknown=1, NotChecked=0, Total=1892 [2024-09-12 21:16:15,265 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 38 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 34 states have internal predecessors, (69), 26 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2024-09-12 21:16:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:16:18,501 INFO L93 Difference]: Finished difference Result 180 states and 228 transitions. [2024-09-12 21:16:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-12 21:16:18,501 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 34 states have internal predecessors, (69), 26 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) Word has length 166 [2024-09-12 21:16:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:16:18,503 INFO L225 Difference]: With dead ends: 180 [2024-09-12 21:16:18,503 INFO L226 Difference]: Without dead ends: 170 [2024-09-12 21:16:18,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 171 SyntacticMatches, 32 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=667, Invalid=7522, Unknown=1, NotChecked=0, Total=8190 [2024-09-12 21:16:18,507 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 118 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 4536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-12 21:16:18,507 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 798 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-12 21:16:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-12 21:16:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 102. [2024-09-12 21:16:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 69 states have internal predecessors, (70), 28 states have call successors, (28), 6 states have call predecessors, (28), 5 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 21:16:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2024-09-12 21:16:18,543 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 166 [2024-09-12 21:16:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:16:18,544 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2024-09-12 21:16:18,544 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 34 states have internal predecessors, (69), 26 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2024-09-12 21:16:18,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:16:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2024-09-12 21:16:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-09-12 21:16:18,547 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:16:18,547 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:16:18,563 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 21:16:18,747 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:16:18,748 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:16:18,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:16:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1553173923, now seen corresponding path program 1 times [2024-09-12 21:16:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:16:18,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724603317] [2024-09-12 21:16:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:16:18,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:16:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:16:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 21:16:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:16:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:16:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:16:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:16:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:16:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:16:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:16:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:16:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:16:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:16:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:16:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:16:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:16:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:16:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:16:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:16:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:16:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 21:16:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:16:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 21:16:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:16:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 21:16:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:16:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 21:16:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 2 proven. 852 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2024-09-12 21:16:19,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:16:19,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724603317] [2024-09-12 21:16:19,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724603317] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:16:19,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838708128] [2024-09-12 21:16:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:16:19,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:16:19,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:16:19,919 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 21:16:19,920 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 21:16:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:20,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 198 conjuncts are in the unsatisfiable core [2024-09-12 21:16:20,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:16:20,189 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 19 treesize of output 1 [2024-09-12 21:16:20,451 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:20,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:20,860 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:20,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:21,359 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:21,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:21,765 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:21,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:21,924 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:21,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:22,054 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:22,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:22,309 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:22,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:22,472 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:22,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:22,906 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:22,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:23,138 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:23,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:23,492 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:23,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:23,759 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:23,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:24,116 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:24,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:24,494 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:24,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:24,637 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:24,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:24,987 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:24,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:25,522 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:25,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:25,631 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:25,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:26,116 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:26,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:26,345 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:26,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:26,745 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:26,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:27,061 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-12 21:16:27,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-12 21:16:27,577 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 21 treesize of output 9 [2024-09-12 21:16:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 179 proven. 141 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2024-09-12 21:16:27,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:16:36,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838708128] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:16:36,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:16:36,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 18] total 41 [2024-09-12 21:16:36,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505497127] [2024-09-12 21:16:36,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:16:36,066 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 21:16:36,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:16:36,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 21:16:36,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1916, Unknown=2, NotChecked=0, Total=2070 [2024-09-12 21:16:36,068 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 29 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2024-09-12 21:16:40,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:16:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:16:44,188 INFO L93 Difference]: Finished difference Result 206 states and 256 transitions. [2024-09-12 21:16:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-12 21:16:44,189 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 29 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) Word has length 187 [2024-09-12 21:16:44,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:16:44,194 INFO L225 Difference]: With dead ends: 206 [2024-09-12 21:16:44,194 INFO L226 Difference]: Without dead ends: 190 [2024-09-12 21:16:44,196 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 198 SyntacticMatches, 40 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=700, Invalid=8228, Unknown=2, NotChecked=0, Total=8930 [2024-09-12 21:16:44,196 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 141 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 4702 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 4874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 4702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:16:44,197 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1185 Invalid, 4874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 4702 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2024-09-12 21:16:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-09-12 21:16:44,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 119. [2024-09-12 21:16:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 80 states have (on average 1.025) internal successors, (82), 81 states have internal predecessors, (82), 31 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 21:16:44,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 143 transitions. [2024-09-12 21:16:44,252 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 143 transitions. Word has length 187 [2024-09-12 21:16:44,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:16:44,252 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 143 transitions. [2024-09-12 21:16:44,253 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 29 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2024-09-12 21:16:44,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:16:44,253 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 143 transitions. [2024-09-12 21:16:44,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-09-12 21:16:44,259 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:16:44,259 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:16:44,278 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 21:16:44,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 21:16:44,460 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:16:44,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:16:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash 772297452, now seen corresponding path program 2 times [2024-09-12 21:16:44,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:16:44,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900987127] [2024-09-12 21:16:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:16:44,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:16:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:16:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 21:16:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:16:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:16:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:16:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:16:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:16:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:16:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:16:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:16:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:16:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:16:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:16:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:16:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:16:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:16:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:16:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:16:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:16:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 21:16:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:16:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 21:16:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:16:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 21:16:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:16:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 21:16:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:16:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 21:16:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 21:16:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:16:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 4 proven. 1001 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2024-09-12 21:16:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:16:45,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900987127] [2024-09-12 21:16:45,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900987127] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:16:45,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154834129] [2024-09-12 21:16:45,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:16:45,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:16:45,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:16:45,607 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 21:16:45,608 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 21:16:46,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:16:46,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:16:46,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-09-12 21:16:46,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:16:46,191 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 19 treesize of output 1 [2024-09-12 21:16:46,467 INFO L349 Elim1Store]: treesize reduction 39, result has 32.8 percent of original size [2024-09-12 21:16:46,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-09-12 21:16:46,865 INFO L349 Elim1Store]: treesize reduction 104, result has 27.3 percent of original size [2024-09-12 21:16:46,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 77 [2024-09-12 21:16:49,345 INFO L349 Elim1Store]: treesize reduction 1316, result has 21.5 percent of original size [2024-09-12 21:16:49,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 6 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 110 case distinctions, treesize of input 190 treesize of output 467 [2024-09-12 21:18:04,813 WARN L293 SmtUtils]: Spent 24.35s on a formula simplification. DAG size of input: 1089 DAG size of output: 1056 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 21:20:42,769 INFO L349 Elim1Store]: treesize reduction 320, result has 19.4 percent of original size [2024-09-12 21:20:42,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 108 treesize of output 153 [2024-09-12 21:21:19,058 WARN L293 SmtUtils]: Spent 33.03s on a formula simplification. DAG size of input: 2324 DAG size of output: 391 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-09-12 21:21:19,059 INFO L349 Elim1Store]: treesize reduction 10658, result has 9.4 percent of original size [2024-09-12 21:21:19,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 42 select indices, 42 select index equivalence classes, 28 disjoint index pairs (out of 861 index pairs), introduced 42 new quantified variables, introduced 867 case distinctions, treesize of input 644 treesize of output 1468 [2024-09-12 21:24:59,042 WARN L293 SmtUtils]: Spent 16.82s on a formula simplification. DAG size of input: 560 DAG size of output: 560 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 21:29:26,511 WARN L293 SmtUtils]: Spent 25.54s on a formula simplification. DAG size of input: 579 DAG size of output: 579 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 21:29:43,407 WARN L293 SmtUtils]: Spent 8.43s on a formula simplification that was a NOOP. DAG size: 573 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15