./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 04d6fb36 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-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 18:39:14,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 18:39:14,407 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 18:39:14,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 18:39:14,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 18:39:14,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 18:39:14,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 18:39:14,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 18:39:14,449 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 18:39:14,449 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 18:39:14,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 18:39:14,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 18:39:14,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 18:39:14,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 18:39:14,452 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 18:39:14,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 18:39:14,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 18:39:14,453 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 18:39:14,453 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 18:39:14,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 18:39:14,454 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 18:39:14,454 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 18:39:14,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 18:39:14,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 18:39:14,455 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 18:39:14,455 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 18:39:14,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 18:39:14,456 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 18:39:14,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 18:39:14,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 18:39:14,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 18:39:14,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 18:39:14,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 18:39:14,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 18:39:14,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 18:39:14,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 18:39:14,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 18:39:14,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 18:39:14,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 18:39:14,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 18:39:14,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 18:39:14,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 18:39:14,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dcb150490c6daa5a1cdb1426c8815f073186f609bef3d7e722a6c72be49ca91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 18:39:14,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 18:39:14,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 18:39:14,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 18:39:14,797 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 18:39:14,798 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 18:39:14,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i [2024-09-15 18:39:16,336 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 18:39:16,546 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 18:39:16,547 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i [2024-09-15 18:39:16,554 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9c0cb5b02/9a9f1ad8151540ec85c5437ac1ad26ea/FLAGff2b652dc [2024-09-15 18:39:16,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9c0cb5b02/9a9f1ad8151540ec85c5437ac1ad26ea [2024-09-15 18:39:16,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 18:39:16,571 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 18:39:16,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 18:39:16,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 18:39:16,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 18:39:16,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fac6b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16, skipping insertion in model container [2024-09-15 18:39:16,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 18:39:16,759 WARN L248 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] [2024-09-15 18:39:16,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 18:39:16,793 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 18:39:16,807 WARN L248 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] [2024-09-15 18:39:16,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 18:39:16,834 INFO L204 MainTranslator]: Completed translation [2024-09-15 18:39:16,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16 WrapperNode [2024-09-15 18:39:16,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 18:39:16,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 18:39:16,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 18:39:16,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 18:39:16,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,858 INFO L138 Inliner]: procedures = 17, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 18:39:16,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 18:39:16,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 18:39:16,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 18:39:16,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 18:39:16,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,871 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,892 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]. [2024-09-15 18:39:16,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 18:39:16,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 18:39:16,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 18:39:16,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 18:39:16,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (1/1) ... [2024-09-15 18:39:16,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 18:39:16,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:39:16,951 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) [2024-09-15 18:39:16,967 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 [2024-09-15 18:39:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 18:39:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-15 18:39:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-15 18:39:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 18:39:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 18:39:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 18:39:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-15 18:39:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-15 18:39:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-15 18:39:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-15 18:39:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 18:39:17,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 18:39:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 18:39:17,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 18:39:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-15 18:39:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-15 18:39:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 18:39:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 18:39:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-15 18:39:17,149 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 18:39:17,152 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 18:39:17,299 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-15 18:39:17,300 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 18:39:17,333 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 18:39:17,334 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-15 18:39:17,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 06:39:17 BoogieIcfgContainer [2024-09-15 18:39:17,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 18:39:17,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 18:39:17,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 18:39:17,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 18:39:17,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 06:39:16" (1/3) ... [2024-09-15 18:39:17,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d794ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 06:39:17, skipping insertion in model container [2024-09-15 18:39:17,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:39:16" (2/3) ... [2024-09-15 18:39:17,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d794ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 06:39:17, skipping insertion in model container [2024-09-15 18:39:17,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 06:39:17" (3/3) ... [2024-09-15 18:39:17,344 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2024-09-15 18:39:17,358 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 18:39:17,358 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 18:39:17,417 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 18:39:17,425 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;@133b5c03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 18:39:17,425 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 18:39:17,429 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) [2024-09-15 18:39:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-15 18:39:17,436 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:39:17,437 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:39:17,438 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:39:17,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash 302093044, now seen corresponding path program 1 times [2024-09-15 18:39:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:39:17,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558047150] [2024-09-15 18:39:17,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:39:17,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:39:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:17,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:39:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:39:17,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:39:17,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558047150] [2024-09-15 18:39:17,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558047150] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:39:17,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:39:17,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 18:39:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754290492] [2024-09-15 18:39:17,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:39:17,625 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 18:39:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:39:17,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 18:39:17,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 18:39:17,646 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) [2024-09-15 18:39:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:39:17,680 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-09-15 18:39:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 18:39:17,686 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 [2024-09-15 18:39:17,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:39:17,692 INFO L225 Difference]: With dead ends: 47 [2024-09-15 18:39:17,693 INFO L226 Difference]: Without dead ends: 22 [2024-09-15 18:39:17,696 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 [2024-09-15 18:39:17,699 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 [2024-09-15 18:39:17,700 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] [2024-09-15 18:39:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-15 18:39:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-15 18:39:17,733 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) [2024-09-15 18:39:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-09-15 18:39:17,737 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2024-09-15 18:39:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:39:17,738 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-09-15 18:39:17,738 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) [2024-09-15 18:39:17,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-09-15 18:39:17,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-15 18:39:17,739 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:39:17,740 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:39:17,740 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 18:39:17,740 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:39:17,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:17,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1791998188, now seen corresponding path program 1 times [2024-09-15 18:39:17,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:39:17,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063920421] [2024-09-15 18:39:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:39:17,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:39:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:17,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:39:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:39:17,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:39:17,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063920421] [2024-09-15 18:39:17,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063920421] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:39:17,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:39:17,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 18:39:17,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301765383] [2024-09-15 18:39:17,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:39:17,926 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 18:39:17,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:39:17,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 18:39:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 18:39:17,927 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) [2024-09-15 18:39:17,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:39:17,960 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-09-15 18:39:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 18:39:17,960 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 [2024-09-15 18:39:17,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:39:17,962 INFO L225 Difference]: With dead ends: 38 [2024-09-15 18:39:17,964 INFO L226 Difference]: Without dead ends: 28 [2024-09-15 18:39:17,964 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 [2024-09-15 18:39:17,965 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 [2024-09-15 18:39:17,966 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] [2024-09-15 18:39:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-15 18:39:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-09-15 18:39:17,974 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) [2024-09-15 18:39:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-15 18:39:17,976 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2024-09-15 18:39:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:39:17,976 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-15 18:39:17,976 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) [2024-09-15 18:39:17,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-15 18:39:17,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-15 18:39:17,978 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:39:17,978 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:39:17,979 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 18:39:17,979 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:39:17,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:17,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1348305993, now seen corresponding path program 1 times [2024-09-15 18:39:17,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:39:17,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724212819] [2024-09-15 18:39:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:39:17,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:39:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:18,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:39:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:18,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 18:39:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:39:18,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:39:18,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724212819] [2024-09-15 18:39:18,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724212819] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:39:18,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875730806] [2024-09-15 18:39:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:39:18,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:39:18,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:39:18,179 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) [2024-09-15 18:39:18,183 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 18:39:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:18,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-15 18:39:18,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:39:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:39:18,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:39:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:39:18,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875730806] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:39:18,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:39:18,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-15 18:39:18,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794680530] [2024-09-15 18:39:18,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:39:18,312 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 18:39:18,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:39:18,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 18:39:18,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-15 18:39:18,313 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) [2024-09-15 18:39:18,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:39:18,440 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2024-09-15 18:39:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 18:39:18,441 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 [2024-09-15 18:39:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:39:18,442 INFO L225 Difference]: With dead ends: 52 [2024-09-15 18:39:18,443 INFO L226 Difference]: Without dead ends: 42 [2024-09-15 18:39:18,443 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 [2024-09-15 18:39:18,444 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 [2024-09-15 18:39:18,445 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] [2024-09-15 18:39:18,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-15 18:39:18,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-09-15 18:39:18,458 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) [2024-09-15 18:39:18,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-15 18:39:18,462 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2024-09-15 18:39:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:39:18,463 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-15 18:39:18,463 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) [2024-09-15 18:39:18,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-15 18:39:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-15 18:39:18,465 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:39:18,465 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:39:18,482 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 18:39:18,668 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 [2024-09-15 18:39:18,669 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:39:18,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:18,671 INFO L85 PathProgramCache]: Analyzing trace with hash 142257068, now seen corresponding path program 2 times [2024-09-15 18:39:18,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:39:18,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100726767] [2024-09-15 18:39:18,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:39:18,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:39:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:18,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:39:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:18,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 18:39:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:18,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 18:39:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:18,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 18:39:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:18,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:39:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 18:39:18,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:39:18,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100726767] [2024-09-15 18:39:18,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100726767] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:39:18,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918453988] [2024-09-15 18:39:18,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:39:18,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:39:18,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:39:18,902 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) [2024-09-15 18:39:18,904 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 18:39:18,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:39:18,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:39:18,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-15 18:39:18,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:39:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 18:39:19,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:39:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 18:39:19,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918453988] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:39:19,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:39:19,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-15 18:39:19,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517412147] [2024-09-15 18:39:19,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:39:19,173 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-15 18:39:19,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:39:19,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-15 18:39:19,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-09-15 18:39:19,177 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) [2024-09-15 18:39:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:39:19,562 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2024-09-15 18:39:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 18:39:19,563 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 [2024-09-15 18:39:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:39:19,565 INFO L225 Difference]: With dead ends: 88 [2024-09-15 18:39:19,565 INFO L226 Difference]: Without dead ends: 78 [2024-09-15 18:39:19,566 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-09-15 18:39:19,566 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:39:19,567 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 160 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:39:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-15 18:39:19,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2024-09-15 18:39:19,577 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) [2024-09-15 18:39:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-09-15 18:39:19,578 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 40 [2024-09-15 18:39:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:39:19,579 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-09-15 18:39:19,579 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) [2024-09-15 18:39:19,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:19,579 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-09-15 18:39:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-15 18:39:19,581 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:39:19,581 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:39:19,597 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 18:39:19,781 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 [2024-09-15 18:39:19,783 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:39:19,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:19,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1112716340, now seen corresponding path program 3 times [2024-09-15 18:39:19,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:39:19,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731922772] [2024-09-15 18:39:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:39:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:39:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:39:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 18:39:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 18:39:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 18:39:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:39:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:39:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:39:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:39:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:39:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:39:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:39:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-15 18:39:20,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:39:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731922772] [2024-09-15 18:39:20,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731922772] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:39:20,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381075258] [2024-09-15 18:39:20,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:39:20,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:39:20,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:39:20,270 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) [2024-09-15 18:39:20,272 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 18:39:30,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-15 18:39:30,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:39:30,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-15 18:39:30,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:39:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-15 18:39:30,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:39:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-15 18:39:30,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381075258] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:39:30,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:39:30,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-09-15 18:39:30,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226459173] [2024-09-15 18:39:30,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:39:30,974 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 18:39:30,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:39:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 18:39:30,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-15 18:39:30,977 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) [2024-09-15 18:39:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:39:34,276 INFO L93 Difference]: Finished difference Result 160 states and 215 transitions. [2024-09-15 18:39:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-15 18:39:34,276 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 [2024-09-15 18:39:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:39:34,278 INFO L225 Difference]: With dead ends: 160 [2024-09-15 18:39:34,278 INFO L226 Difference]: Without dead ends: 150 [2024-09-15 18:39:34,279 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2024-09-15 18:39:34,279 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 96 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2024-09-15 18:39:34,279 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] [2024-09-15 18:39:34,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-15 18:39:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 86. [2024-09-15 18:39:34,313 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) [2024-09-15 18:39:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2024-09-15 18:39:34,316 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 82 [2024-09-15 18:39:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:39:34,317 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2024-09-15 18:39:34,317 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) [2024-09-15 18:39:34,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2024-09-15 18:39:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-09-15 18:39:34,323 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:39:34,323 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:39:34,346 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-15 18:39:34,523 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 [2024-09-15 18:39:34,524 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:39:34,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:34,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1141500916, now seen corresponding path program 4 times [2024-09-15 18:39:34,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:39:34,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430685479] [2024-09-15 18:39:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:39:34,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:39:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:39:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 18:39:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 18:39:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 18:39:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:39:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:39:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:39:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:39:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:39:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:39:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:39:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:39:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:39:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:39:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:39:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:39:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:39:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:39:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:39:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:39:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:39:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:39:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:39:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-15 18:39:35,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:39:35,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430685479] [2024-09-15 18:39:35,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430685479] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:39:35,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645376857] [2024-09-15 18:39:35,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:39:35,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:39:35,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:39:35,572 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) [2024-09-15 18:39:35,577 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 18:39:35,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:39:35,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:39:35,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-09-15 18:39:35,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:39:35,839 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 [2024-09-15 18:39:36,178 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:36,179 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 [2024-09-15 18:39:36,444 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:36,444 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 [2024-09-15 18:39:36,624 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:36,624 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 [2024-09-15 18:39:36,895 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:36,895 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 [2024-09-15 18:39:37,170 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:37,170 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 [2024-09-15 18:39:37,331 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:37,332 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 [2024-09-15 18:39:37,661 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:37,661 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 [2024-09-15 18:39:37,851 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:37,854 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 [2024-09-15 18:39:38,361 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:38,361 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 [2024-09-15 18:39:38,718 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:38,718 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 [2024-09-15 18:39:38,843 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:38,844 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 [2024-09-15 18:39:39,205 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:39,206 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 [2024-09-15 18:39:39,477 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:39,478 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 [2024-09-15 18:39:39,627 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:39,628 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 [2024-09-15 18:39:39,769 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:39,769 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 [2024-09-15 18:39:40,160 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:40,161 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 [2024-09-15 18:39:40,464 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:40,464 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 [2024-09-15 18:39:40,690 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:40,690 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 [2024-09-15 18:39:41,070 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:41,070 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 [2024-09-15 18:39:41,246 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:41,246 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 [2024-09-15 18:39:41,436 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-15 18:39:41,437 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 [2024-09-15 18:39:41,534 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 [2024-09-15 18:39:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 84 proven. 64 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2024-09-15 18:39:41,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:39:45,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645376857] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:39:45,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 18:39:45,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16] total 38 [2024-09-15 18:39:45,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851140322] [2024-09-15 18:39:45,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 18:39:45,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-15 18:39:45,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:39:45,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-15 18:39:45,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1751, Unknown=1, NotChecked=0, Total=1892 [2024-09-15 18:39:45,900 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) [2024-09-15 18:39:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:39:49,157 INFO L93 Difference]: Finished difference Result 180 states and 228 transitions. [2024-09-15 18:39:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-15 18:39:49,158 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 [2024-09-15 18:39:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:39:49,160 INFO L225 Difference]: With dead ends: 180 [2024-09-15 18:39:49,163 INFO L226 Difference]: Without dead ends: 170 [2024-09-15 18:39:49,165 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 171 SyntacticMatches, 32 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=667, Invalid=7522, Unknown=1, NotChecked=0, Total=8190 [2024-09-15 18:39:49,166 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 [2024-09-15 18:39:49,166 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] [2024-09-15 18:39:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-15 18:39:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 102. [2024-09-15 18:39:49,185 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) [2024-09-15 18:39:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2024-09-15 18:39:49,190 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 166 [2024-09-15 18:39:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:39:49,190 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2024-09-15 18:39:49,190 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) [2024-09-15 18:39:49,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2024-09-15 18:39:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-09-15 18:39:49,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:39:49,195 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] [2024-09-15 18:39:49,212 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 18:39:49,395 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 [2024-09-15 18:39:49,396 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:39:49,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:39:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1553173923, now seen corresponding path program 1 times [2024-09-15 18:39:49,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:39:49,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260376904] [2024-09-15 18:39:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:39:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:39:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:39:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 18:39:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 18:39:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 18:39:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:39:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:39:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:39:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:39:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:39:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:39:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:39:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:39:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:39:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:39:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:39:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:39:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:39:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:39:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:39:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:39:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:39:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:39:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:39:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-15 18:39:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-15 18:39:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-15 18:39:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 2 proven. 852 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2024-09-15 18:39:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:39:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260376904] [2024-09-15 18:39:50,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260376904] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:39:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477938046] [2024-09-15 18:39:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:39:50,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:39:50,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:39:50,413 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) [2024-09-15 18:39:50,417 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 18:39:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:39:50,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 198 conjuncts are in the unsatisfiable core [2024-09-15 18:39:50,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:39:50,653 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 [2024-09-15 18:39:50,962 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:50,963 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 [2024-09-15 18:39:51,442 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:51,442 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 [2024-09-15 18:39:51,845 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:51,846 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 [2024-09-15 18:39:52,230 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:52,230 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 [2024-09-15 18:39:52,387 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:52,388 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 [2024-09-15 18:39:52,514 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:52,514 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 [2024-09-15 18:39:52,783 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:52,783 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 [2024-09-15 18:39:52,940 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:52,940 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 [2024-09-15 18:39:53,557 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:53,558 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 [2024-09-15 18:39:53,789 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:53,789 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 [2024-09-15 18:39:54,109 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:54,109 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 [2024-09-15 18:39:54,385 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:54,386 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 [2024-09-15 18:39:54,740 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:54,742 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 [2024-09-15 18:39:55,138 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:55,138 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 [2024-09-15 18:39:55,305 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:55,305 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 [2024-09-15 18:39:55,702 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:55,703 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 [2024-09-15 18:39:56,105 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:56,106 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 [2024-09-15 18:39:56,218 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:56,219 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 [2024-09-15 18:39:56,615 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:56,616 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 [2024-09-15 18:39:56,836 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:56,836 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 [2024-09-15 18:39:57,116 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:57,116 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 [2024-09-15 18:39:57,366 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-15 18:39:57,366 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 [2024-09-15 18:39:57,796 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 [2024-09-15 18:39:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 179 proven. 141 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2024-09-15 18:39:57,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:40:06,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477938046] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:40:06,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 18:40:06,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 18] total 41 [2024-09-15 18:40:06,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796003474] [2024-09-15 18:40:06,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 18:40:06,291 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-15 18:40:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:40:06,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-15 18:40:06,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1916, Unknown=2, NotChecked=0, Total=2070 [2024-09-15 18:40:06,292 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) [2024-09-15 18:40:10,350 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] [2024-09-15 18:40:14,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:40:14,746 INFO L93 Difference]: Finished difference Result 206 states and 256 transitions. [2024-09-15 18:40:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-15 18:40:14,747 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 [2024-09-15 18:40:14,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:40:14,751 INFO L225 Difference]: With dead ends: 206 [2024-09-15 18:40:14,751 INFO L226 Difference]: Without dead ends: 190 [2024-09-15 18:40:14,753 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 [2024-09-15 18:40:14,754 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 141 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 4702 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s 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, 6.6s IncrementalHoareTripleChecker+Time [2024-09-15 18:40:14,754 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1185 Invalid, 4874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 4702 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2024-09-15 18:40:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-09-15 18:40:14,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 119. [2024-09-15 18:40:14,785 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) [2024-09-15 18:40:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 143 transitions. [2024-09-15 18:40:14,787 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 143 transitions. Word has length 187 [2024-09-15 18:40:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:40:14,788 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 143 transitions. [2024-09-15 18:40:14,788 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) [2024-09-15 18:40:14,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:40:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 143 transitions. [2024-09-15 18:40:14,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-09-15 18:40:14,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:40:14,790 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] [2024-09-15 18:40:14,806 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-15 18:40:14,991 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 [2024-09-15 18:40:14,991 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:40:14,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:40:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash 772297452, now seen corresponding path program 2 times [2024-09-15 18:40:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:40:14,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321711700] [2024-09-15 18:40:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:40:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:40:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:40:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-15 18:40:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 18:40:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 18:40:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:40:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:40:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:40:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:40:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:40:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:40:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:40:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:40:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:40:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:40:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:40:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:40:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:40:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:40:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:40:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:40:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:40:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:40:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:40:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-15 18:40:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-15 18:40:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-15 18:40:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-15 18:40:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-15 18:40:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-15 18:40:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:40:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 4 proven. 1001 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2024-09-15 18:40:16,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:40:16,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321711700] [2024-09-15 18:40:16,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321711700] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:40:16,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722257911] [2024-09-15 18:40:16,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:40:16,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:40:16,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:40:16,067 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) [2024-09-15 18:40:16,068 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 18:40:16,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:40:16,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:40:16,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-09-15 18:40:16,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:40:16,588 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 [2024-09-15 18:40:16,854 INFO L349 Elim1Store]: treesize reduction 39, result has 32.8 percent of original size [2024-09-15 18:40:16,854 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 [2024-09-15 18:40:17,367 INFO L349 Elim1Store]: treesize reduction 104, result has 27.3 percent of original size [2024-09-15 18:40:17,367 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 [2024-09-15 18:40:19,572 INFO L349 Elim1Store]: treesize reduction 1316, result has 21.5 percent of original size [2024-09-15 18:40:19,573 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 [2024-09-15 18:41:45,342 WARN L293 SmtUtils]: Spent 31.13s 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)