./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 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd 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 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 18:42:49,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 18:42:49,695 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 18:42:49,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 18:42:49,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 18:42:49,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 18:42:49,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 18:42:49,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 18:42:49,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 18:42:49,723 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 18:42:49,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 18:42:49,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 18:42:49,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 18:42:49,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 18:42:49,729 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 18:42:49,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 18:42:49,730 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 18:42:49,730 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 18:42:49,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 18:42:49,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 18:42:49,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 18:42:49,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 18:42:49,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 18:42:49,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 18:42:49,733 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 18:42:49,733 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 18:42:49,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 18:42:49,733 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 18:42:49,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 18:42:49,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 18:42:49,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 18:42:49,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 18:42:49,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 18:42:49,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 18:42:49,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 18:42:49,735 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 18:42:49,735 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 18:42:49,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 18:42:49,736 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 18:42:49,736 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 18:42:49,736 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 18:42:49,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 18:42:49,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dcb150490c6daa5a1cdb1426c8815f073186f609bef3d7e722a6c72be49ca91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 18:42:49,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 18:42:50,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 18:42:50,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 18:42:50,008 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 18:42:50,008 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 18:42:50,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i [2024-09-20 18:42:51,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 18:42:51,664 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 18:42:51,664 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i [2024-09-20 18:42:51,671 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f7d7197b1/7e653f4fe9cc4bb5bfb7b23d03eaa55f/FLAGbb58ba028 [2024-09-20 18:42:51,686 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f7d7197b1/7e653f4fe9cc4bb5bfb7b23d03eaa55f [2024-09-20 18:42:51,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 18:42:51,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 18:42:51,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 18:42:51,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 18:42:51,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 18:42:51,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:51,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31e7ee97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51, skipping insertion in model container [2024-09-20 18:42:51,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:51,721 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 18:42:51,890 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] [2024-09-20 18:42:51,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 18:42:51,925 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 18:42:51,938 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] [2024-09-20 18:42:51,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 18:42:51,963 INFO L204 MainTranslator]: Completed translation [2024-09-20 18:42:51,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51 WrapperNode [2024-09-20 18:42:51,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 18:42:51,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 18:42:51,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 18:42:51,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 18:42:51,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:51,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:51,987 INFO L138 Inliner]: procedures = 17, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 18:42:51,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 18:42:51,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 18:42:51,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 18:42:51,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 18:42:51,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:51,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:52,004 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:52,026 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 [0, 2]. The 1 writes are split as follows [1, 0]. [2024-09-20 18:42:52,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:52,027 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:52,038 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:52,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:52,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:52,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:52,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 18:42:52,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 18:42:52,051 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 18:42:52,051 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 18:42:52,052 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (1/1) ... [2024-09-20 18:42:52,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 18:42:52,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:42:52,086 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) [2024-09-20 18:42:52,088 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 [2024-09-20 18:42:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 18:42:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 18:42:52,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 18:42:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 18:42:52,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 18:42:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 18:42:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-20 18:42:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-20 18:42:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-20 18:42:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-20 18:42:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 18:42:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 18:42:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 18:42:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 18:42:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-20 18:42:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-20 18:42:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 18:42:52,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 18:42:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-20 18:42:52,206 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 18:42:52,209 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 18:42:52,336 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-20 18:42:52,337 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 18:42:52,362 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 18:42:52,362 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 18:42:52,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 06:42:52 BoogieIcfgContainer [2024-09-20 18:42:52,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 18:42:52,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 18:42:52,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 18:42:52,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 18:42:52,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 06:42:51" (1/3) ... [2024-09-20 18:42:52,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f07ea90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 06:42:52, skipping insertion in model container [2024-09-20 18:42:52,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:42:51" (2/3) ... [2024-09-20 18:42:52,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f07ea90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 06:42:52, skipping insertion in model container [2024-09-20 18:42:52,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 06:42:52" (3/3) ... [2024-09-20 18:42:52,378 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2024-09-20 18:42:52,397 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 18:42:52,398 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 18:42:52,452 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 18:42:52,480 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;@74b19f62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 18:42:52,480 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 18:42:52,490 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) [2024-09-20 18:42:52,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 18:42:52,502 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:42:52,503 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:42:52,504 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:42:52,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:42:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash 302093044, now seen corresponding path program 1 times [2024-09-20 18:42:52,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:42:52,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884416882] [2024-09-20 18:42:52,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:42:52,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:42:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:52,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:42:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:42:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:42:52,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884416882] [2024-09-20 18:42:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884416882] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:42:52,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 18:42:52,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 18:42:52,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324574199] [2024-09-20 18:42:52,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:42:52,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 18:42:52,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:42:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 18:42:52,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 18:42:52,794 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) [2024-09-20 18:42:52,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:42:52,831 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-09-20 18:42:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 18:42:52,834 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 [2024-09-20 18:42:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:42:52,840 INFO L225 Difference]: With dead ends: 47 [2024-09-20 18:42:52,841 INFO L226 Difference]: Without dead ends: 22 [2024-09-20 18:42:52,844 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 [2024-09-20 18:42:52,847 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 [2024-09-20 18:42:52,850 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] [2024-09-20 18:42:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-20 18:42:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-20 18:42:52,885 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) [2024-09-20 18:42:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-09-20 18:42:52,889 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2024-09-20 18:42:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:42:52,890 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-09-20 18:42:52,891 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) [2024-09-20 18:42:52,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:42:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-09-20 18:42:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 18:42:52,894 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:42:52,894 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:42:52,894 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 18:42:52,895 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:42:52,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:42:52,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1791998188, now seen corresponding path program 1 times [2024-09-20 18:42:52,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:42:52,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412633444] [2024-09-20 18:42:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:42:52,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:42:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:53,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:42:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:42:53,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:42:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412633444] [2024-09-20 18:42:53,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412633444] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:42:53,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 18:42:53,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 18:42:53,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912261801] [2024-09-20 18:42:53,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:42:53,083 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 18:42:53,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:42:53,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 18:42:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 18:42:53,084 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) [2024-09-20 18:42:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:42:53,129 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-09-20 18:42:53,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 18:42:53,131 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 [2024-09-20 18:42:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:42:53,133 INFO L225 Difference]: With dead ends: 38 [2024-09-20 18:42:53,134 INFO L226 Difference]: Without dead ends: 28 [2024-09-20 18:42:53,134 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 [2024-09-20 18:42:53,137 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 [2024-09-20 18:42:53,138 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] [2024-09-20 18:42:53,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-20 18:42:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-09-20 18:42:53,153 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) [2024-09-20 18:42:53,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-20 18:42:53,155 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2024-09-20 18:42:53,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:42:53,156 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-20 18:42:53,156 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) [2024-09-20 18:42:53,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:42:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-20 18:42:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-20 18:42:53,158 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:42:53,158 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:42:53,158 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 18:42:53,158 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:42:53,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:42:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1348305993, now seen corresponding path program 1 times [2024-09-20 18:42:53,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:42:53,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508155659] [2024-09-20 18:42:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:42:53,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:42:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:53,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:42:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:53,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 18:42:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:42:53,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:42:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508155659] [2024-09-20 18:42:53,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508155659] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:42:53,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075816745] [2024-09-20 18:42:53,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:42:53,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:42:53,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:42:53,405 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) [2024-09-20 18:42:53,407 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 18:42:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:53,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-20 18:42:53,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:42:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:42:53,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:42:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:42:53,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075816745] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:42:53,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:42:53,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-20 18:42:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667130968] [2024-09-20 18:42:53,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:42:53,591 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 18:42:53,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:42:53,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 18:42:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-20 18:42:53,592 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) [2024-09-20 18:42:53,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:42:53,731 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2024-09-20 18:42:53,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 18:42:53,732 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 [2024-09-20 18:42:53,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:42:53,733 INFO L225 Difference]: With dead ends: 52 [2024-09-20 18:42:53,733 INFO L226 Difference]: Without dead ends: 42 [2024-09-20 18:42:53,734 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-09-20 18:42:53,735 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 [2024-09-20 18:42:53,738 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] [2024-09-20 18:42:53,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-20 18:42:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-09-20 18:42:53,750 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) [2024-09-20 18:42:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-20 18:42:53,755 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2024-09-20 18:42:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:42:53,756 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-20 18:42:53,756 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) [2024-09-20 18:42:53,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:42:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-20 18:42:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-20 18:42:53,758 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:42:53,758 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:42:53,777 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 18:42:53,964 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 [2024-09-20 18:42:53,965 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:42:53,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:42:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash 142257068, now seen corresponding path program 2 times [2024-09-20 18:42:53,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:42:53,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819779801] [2024-09-20 18:42:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:42:53,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:42:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:54,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:42:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:54,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 18:42:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:54,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 18:42:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:54,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:42:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:54,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:42:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:42:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:42:54,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819779801] [2024-09-20 18:42:54,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819779801] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:42:54,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391550759] [2024-09-20 18:42:54,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:42:54,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:42:54,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:42:54,273 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) [2024-09-20 18:42:54,275 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 18:42:54,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:42:54,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:42:54,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 18:42:54,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:42:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:42:54,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:42:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:42:54,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391550759] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:42:54,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:42:54,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-20 18:42:54,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863169506] [2024-09-20 18:42:54,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:42:54,572 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 18:42:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:42:54,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 18:42:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-09-20 18:42:54,577 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) [2024-09-20 18:42:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:42:55,016 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2024-09-20 18:42:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 18:42:55,017 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 [2024-09-20 18:42:55,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:42:55,019 INFO L225 Difference]: With dead ends: 88 [2024-09-20 18:42:55,019 INFO L226 Difference]: Without dead ends: 78 [2024-09-20 18:42:55,020 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 [2024-09-20 18:42:55,020 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:42:55,021 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 160 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:42:55,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-20 18:42:55,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2024-09-20 18:42:55,033 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) [2024-09-20 18:42:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-09-20 18:42:55,035 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 40 [2024-09-20 18:42:55,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:42:55,035 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-09-20 18:42:55,036 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) [2024-09-20 18:42:55,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:42:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-09-20 18:42:55,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-20 18:42:55,038 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:42:55,038 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:42:55,055 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 18:42:55,239 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 [2024-09-20 18:42:55,240 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:42:55,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:42:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1112716340, now seen corresponding path program 3 times [2024-09-20 18:42:55,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:42:55,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383364540] [2024-09-20 18:42:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:42:55,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:42:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:42:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 18:42:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 18:42:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:42:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:42:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:42:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:42:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:42:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:42:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:42:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:42:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:42:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:42:55,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:42:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383364540] [2024-09-20 18:42:55,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383364540] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:42:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117694292] [2024-09-20 18:42:55,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:42:55,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:42:55,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:42:55,818 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) [2024-09-20 18:42:55,820 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 18:43:05,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-20 18:43:05,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:43:05,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-20 18:43:05,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:43:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:43:05,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:43:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:43:06,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117694292] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:43:06,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:43:06,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-09-20 18:43:06,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501451767] [2024-09-20 18:43:06,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:43:06,359 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 18:43:06,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:43:06,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 18:43:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-20 18:43:06,363 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) [2024-09-20 18:43:09,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:43:09,473 INFO L93 Difference]: Finished difference Result 160 states and 215 transitions. [2024-09-20 18:43:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-20 18:43:09,474 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 [2024-09-20 18:43:09,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:43:09,476 INFO L225 Difference]: With dead ends: 160 [2024-09-20 18:43:09,476 INFO L226 Difference]: Without dead ends: 150 [2024-09-20 18:43:09,477 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 18:43:09,482 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 96 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-20 18:43:09,482 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] [2024-09-20 18:43:09,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-20 18:43:09,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 86. [2024-09-20 18:43:09,519 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) [2024-09-20 18:43:09,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2024-09-20 18:43:09,521 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 82 [2024-09-20 18:43:09,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:43:09,521 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2024-09-20 18:43:09,522 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) [2024-09-20 18:43:09,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:43:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2024-09-20 18:43:09,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-09-20 18:43:09,529 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:43:09,530 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:43:09,549 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 18:43:09,730 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 [2024-09-20 18:43:09,731 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:43:09,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:43:09,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1141500916, now seen corresponding path program 4 times [2024-09-20 18:43:09,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:43:09,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345408942] [2024-09-20 18:43:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:43:09,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:43:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:43:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 18:43:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 18:43:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:43:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:43:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:43:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:43:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:43:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:43:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:43:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:43:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:43:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:43:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:43:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:43:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:43:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:43:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:43:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:43:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:43:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:43:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:43:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:43:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:43:10,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:43:10,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345408942] [2024-09-20 18:43:10,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345408942] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:43:10,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838538474] [2024-09-20 18:43:10,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:43:10,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:43:10,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:43:10,834 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) [2024-09-20 18:43:10,839 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 18:43:10,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:43:10,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:43:10,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-09-20 18:43:11,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:43:11,159 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 [2024-09-20 18:43:11,627 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:11,627 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 [2024-09-20 18:43:11,938 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:11,941 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 [2024-09-20 18:43:12,271 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:12,272 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 [2024-09-20 18:43:12,552 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:12,552 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 [2024-09-20 18:43:12,834 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:12,834 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 [2024-09-20 18:43:13,509 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:13,509 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 [2024-09-20 18:43:14,031 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:14,032 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 [2024-09-20 18:43:14,286 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:14,286 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 [2024-09-20 18:43:14,895 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:14,895 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 [2024-09-20 18:43:15,060 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:15,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-20 18:43:15,484 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:15,484 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 [2024-09-20 18:43:15,927 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:15,928 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 [2024-09-20 18:43:16,403 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:16,404 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 [2024-09-20 18:43:16,938 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:16,939 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 [2024-09-20 18:43:17,346 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:17,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-09-20 18:43:17,944 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:17,945 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 [2024-09-20 18:43:18,434 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:18,434 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 [2024-09-20 18:43:18,765 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:18,766 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 [2024-09-20 18:43:19,193 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:19,194 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 [2024-09-20 18:43:19,314 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:19,314 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 [2024-09-20 18:43:19,481 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-20 18:43:19,481 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 [2024-09-20 18:43:19,785 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 [2024-09-20 18:43:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 84 proven. 64 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2024-09-20 18:43:19,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:43:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838538474] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:43:24,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 18:43:24,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16] total 38 [2024-09-20 18:43:24,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640998918] [2024-09-20 18:43:24,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 18:43:24,166 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-20 18:43:24,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:43:24,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-20 18:43:24,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1751, Unknown=1, NotChecked=0, Total=1892 [2024-09-20 18:43:24,169 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) [2024-09-20 18:43:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:43:27,454 INFO L93 Difference]: Finished difference Result 180 states and 228 transitions. [2024-09-20 18:43:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-20 18:43:27,455 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 [2024-09-20 18:43:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:43:27,457 INFO L225 Difference]: With dead ends: 180 [2024-09-20 18:43:27,457 INFO L226 Difference]: Without dead ends: 170 [2024-09-20 18:43:27,460 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 164 SyntacticMatches, 39 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=667, Invalid=7522, Unknown=1, NotChecked=0, Total=8190 [2024-09-20 18:43:27,461 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 118 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:43:27,461 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 798 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-20 18:43:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-20 18:43:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 102. [2024-09-20 18:43:27,500 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) [2024-09-20 18:43:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2024-09-20 18:43:27,502 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 166 [2024-09-20 18:43:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:43:27,503 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2024-09-20 18:43:27,503 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) [2024-09-20 18:43:27,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:43:27,504 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2024-09-20 18:43:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-09-20 18:43:27,506 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:43:27,506 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] [2024-09-20 18:43:27,520 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 18:43:27,707 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 [2024-09-20 18:43:27,707 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:43:27,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:43:27,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1553173923, now seen corresponding path program 1 times [2024-09-20 18:43:27,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:43:27,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017266171] [2024-09-20 18:43:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:43:27,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:43:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:43:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 18:43:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 18:43:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:43:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:43:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:43:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:43:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:43:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:43:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:43:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:43:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:43:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:43:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:43:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:43:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:43:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:43:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:43:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:43:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:43:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:43:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:43:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:43:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:43:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:43:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:43:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 2 proven. 852 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2024-09-20 18:43:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:43:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017266171] [2024-09-20 18:43:28,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017266171] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:43:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780841273] [2024-09-20 18:43:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:43:28,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:43:28,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:43:28,833 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) [2024-09-20 18:43:28,834 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 18:43:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:43:28,971 WARN L260 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 240 conjuncts are in the unsatisfiable core [2024-09-20 18:43:28,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:43:29,058 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 [2024-09-20 18:43:29,272 INFO L349 Elim1Store]: treesize reduction 39, result has 32.8 percent of original size [2024-09-20 18:43:29,273 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 [2024-09-20 18:43:29,575 INFO L349 Elim1Store]: treesize reduction 104, result has 27.3 percent of original size [2024-09-20 18:43:29,575 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 [2024-09-20 18:43:30,154 INFO L349 Elim1Store]: treesize reduction 198, result has 22.7 percent of original size [2024-09-20 18:43:30,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 115 [2024-09-20 18:43:33,609 INFO L349 Elim1Store]: treesize reduction 2324, result has 17.5 percent of original size [2024-09-20 18:43:33,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 10 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 195 case distinctions, treesize of input 245 treesize of output 633 [2024-09-20 18:45:47,483 WARN L293 SmtUtils]: Spent 32.45s on a formula simplification. DAG size of input: 516 DAG size of output: 532 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)