./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 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-6908dde-m [2024-09-24 23:00:47,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:00:47,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:00:47,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:00:47,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:00:47,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:00:47,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:00:47,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:00:47,428 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:00:47,429 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:00:47,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:00:47,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:00:47,430 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:00:47,431 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:00:47,431 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:00:47,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:00:47,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:00:47,434 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:00:47,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:00:47,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:00:47,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:00:47,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:00:47,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:00:47,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:00:47,435 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:00:47,435 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:00:47,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:00:47,435 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:00:47,435 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:00:47,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:00:47,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:00:47,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:00:47,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:00:47,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:00:47,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:00:47,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:00:47,436 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:00:47,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:00:47,437 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:00:47,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:00:47,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:00:47,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:00:47,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dcb150490c6daa5a1cdb1426c8815f073186f609bef3d7e722a6c72be49ca91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:00:47,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:00:47,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:00:47,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:00:47,694 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:00:47,695 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:00:47,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i [2024-09-24 23:00:49,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:00:49,193 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:00:49,193 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-crafted/simple_array_index_value_2.i [2024-09-24 23:00:49,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/bea2af98d/a98e331a5a344b6789d255ed5af81aaf/FLAGbbcdd1810 [2024-09-24 23:00:49,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/bea2af98d/a98e331a5a344b6789d255ed5af81aaf [2024-09-24 23:00:49,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:00:49,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:00:49,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:00:49,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:00:49,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:00:49,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669f08cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49, skipping insertion in model container [2024-09-24 23:00:49,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:00:49,778 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] [2024-09-24 23:00:49,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:00:49,804 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:00:49,814 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] [2024-09-24 23:00:49,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:00:49,851 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:00:49,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49 WrapperNode [2024-09-24 23:00:49,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:00:49,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:00:49,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:00:49,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:00:49,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,872 INFO L138 Inliner]: procedures = 17, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:00:49,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:00:49,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:00:49,873 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:00:49,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:00:49,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,882 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,906 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-09-24 23:00:49,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,911 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,917 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:00:49,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:00:49,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:00:49,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:00:49,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (1/1) ... [2024-09-24 23:00:49,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:00:49,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:00:49,950 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) [2024-09-24 23:00:49,959 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 [2024-09-24 23:00:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:00:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-24 23:00:49,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-24 23:00:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:00:49,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:00:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:00:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-24 23:00:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-24 23:00:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-24 23:00:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-24 23:00:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:00:49,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:00:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:00:49,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:00:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-24 23:00:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-24 23:00:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:00:49,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:00:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-24 23:00:50,067 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:00:50,069 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:00:50,177 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-24 23:00:50,178 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:00:50,194 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:00:50,194 INFO L317 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-24 23:00:50,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:00:50 BoogieIcfgContainer [2024-09-24 23:00:50,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:00:50,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:00:50,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:00:50,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:00:50,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:00:49" (1/3) ... [2024-09-24 23:00:50,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd1d2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:00:50, skipping insertion in model container [2024-09-24 23:00:50,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:00:49" (2/3) ... [2024-09-24 23:00:50,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd1d2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:00:50, skipping insertion in model container [2024-09-24 23:00:50,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:00:50" (3/3) ... [2024-09-24 23:00:50,203 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_2.i [2024-09-24 23:00:50,215 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:00:50,215 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:00:50,256 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:00:50,262 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;@759144e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:00:50,263 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:00:50,267 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) [2024-09-24 23:00:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-24 23:00:50,274 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:00:50,275 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:00:50,276 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:00:50,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:00:50,279 INFO L85 PathProgramCache]: Analyzing trace with hash 302093044, now seen corresponding path program 1 times [2024-09-24 23:00:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:00:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323196931] [2024-09-24 23:00:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:00:50,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:00:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:50,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:00:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:00:50,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:00:50,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323196931] [2024-09-24 23:00:50,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323196931] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:00:50,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:00:50,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 23:00:50,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857165318] [2024-09-24 23:00:50,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:00:50,431 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 23:00:50,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:00:50,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 23:00:50,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:00:50,449 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) [2024-09-24 23:00:50,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:00:50,469 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-09-24 23:00:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 23:00:50,470 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 [2024-09-24 23:00:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:00:50,475 INFO L225 Difference]: With dead ends: 47 [2024-09-24 23:00:50,475 INFO L226 Difference]: Without dead ends: 22 [2024-09-24 23:00:50,477 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 [2024-09-24 23:00:50,479 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 [2024-09-24 23:00:50,480 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] [2024-09-24 23:00:50,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-24 23:00:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-24 23:00:50,508 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) [2024-09-24 23:00:50,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-09-24 23:00:50,510 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2024-09-24 23:00:50,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:00:50,510 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-09-24 23:00:50,510 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) [2024-09-24 23:00:50,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:00:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-09-24 23:00:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-24 23:00:50,513 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:00:50,513 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:00:50,513 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:00:50,514 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:00:50,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:00:50,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1791998188, now seen corresponding path program 1 times [2024-09-24 23:00:50,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:00:50,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342579944] [2024-09-24 23:00:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:00:50,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:00:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:50,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:00:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:00:50,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:00:50,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342579944] [2024-09-24 23:00:50,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342579944] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:00:50,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:00:50,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 23:00:50,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262507909] [2024-09-24 23:00:50,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:00:50,653 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 23:00:50,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:00:50,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 23:00:50,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 23:00:50,654 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) [2024-09-24 23:00:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:00:50,672 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-09-24 23:00:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 23:00:50,673 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 [2024-09-24 23:00:50,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:00:50,674 INFO L225 Difference]: With dead ends: 38 [2024-09-24 23:00:50,674 INFO L226 Difference]: Without dead ends: 28 [2024-09-24 23:00:50,678 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 [2024-09-24 23:00:50,679 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 [2024-09-24 23:00:50,679 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] [2024-09-24 23:00:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-24 23:00:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-09-24 23:00:50,688 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) [2024-09-24 23:00:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-24 23:00:50,692 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2024-09-24 23:00:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:00:50,692 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-24 23:00:50,693 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) [2024-09-24 23:00:50,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:00:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-24 23:00:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-24 23:00:50,693 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:00:50,694 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:00:50,694 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-24 23:00:50,694 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:00:50,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:00:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1348305993, now seen corresponding path program 1 times [2024-09-24 23:00:50,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:00:50,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021780730] [2024-09-24 23:00:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:00:50,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:00:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:50,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:00:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:50,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:00:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:00:50,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:00:50,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021780730] [2024-09-24 23:00:50,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021780730] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:00:50,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136020365] [2024-09-24 23:00:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:00:50,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:00:50,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:00:50,947 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) [2024-09-24 23:00:50,948 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:00:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:50,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-24 23:00:51,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:00:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:00:51,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:00:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:00:51,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136020365] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:00:51,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:00:51,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-24 23:00:51,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035632164] [2024-09-24 23:00:51,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:00:51,062 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-24 23:00:51,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:00:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-24 23:00:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:00:51,063 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) [2024-09-24 23:00:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:00:51,143 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2024-09-24 23:00:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:00:51,144 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 [2024-09-24 23:00:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:00:51,145 INFO L225 Difference]: With dead ends: 52 [2024-09-24 23:00:51,145 INFO L226 Difference]: Without dead ends: 42 [2024-09-24 23:00:51,145 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-09-24 23:00:51,146 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-09-24 23:00:51,147 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] [2024-09-24 23:00:51,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-24 23:00:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2024-09-24 23:00:51,152 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) [2024-09-24 23:00:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-24 23:00:51,153 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2024-09-24 23:00:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:00:51,153 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-24 23:00:51,153 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) [2024-09-24 23:00:51,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:00:51,154 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-24 23:00:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-24 23:00:51,155 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:00:51,155 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:00:51,169 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-24 23:00:51,359 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 [2024-09-24 23:00:51,360 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:00:51,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:00:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash 142257068, now seen corresponding path program 2 times [2024-09-24 23:00:51,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:00:51,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406859542] [2024-09-24 23:00:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:00:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:00:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:51,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:00:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:51,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:00:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:51,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-24 23:00:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:51,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:00:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:51,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:00:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:00:51,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:00:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406859542] [2024-09-24 23:00:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406859542] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:00:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313779621] [2024-09-24 23:00:51,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:00:51,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:00:51,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:00:51,606 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) [2024-09-24 23:00:51,611 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:00:51,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:00:51,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:00:51,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-24 23:00:51,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:00:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:00:51,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:00:51,866 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:00:51,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313779621] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:00:51,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:00:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-24 23:00:51,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530003535] [2024-09-24 23:00:51,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:00:51,867 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-24 23:00:51,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:00:51,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-24 23:00:51,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:00:51,869 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) [2024-09-24 23:00:52,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:00:52,206 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2024-09-24 23:00:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-24 23:00:52,207 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 [2024-09-24 23:00:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:00:52,208 INFO L225 Difference]: With dead ends: 88 [2024-09-24 23:00:52,208 INFO L226 Difference]: Without dead ends: 78 [2024-09-24 23:00:52,209 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 [2024-09-24 23:00:52,210 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:00:52,210 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 160 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:00:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-24 23:00:52,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2024-09-24 23:00:52,221 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) [2024-09-24 23:00:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-09-24 23:00:52,222 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 40 [2024-09-24 23:00:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:00:52,223 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-09-24 23:00:52,223 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) [2024-09-24 23:00:52,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:00:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-09-24 23:00:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-24 23:00:52,225 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:00:52,226 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:00:52,241 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-24 23:00:52,426 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 [2024-09-24 23:00:52,427 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:00:52,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:00:52,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1112716340, now seen corresponding path program 3 times [2024-09-24 23:00:52,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:00:52,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69471273] [2024-09-24 23:00:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:00:52,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:00:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:00:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:00:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-24 23:00:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:00:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:00:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:00:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:00:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:00:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:00:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:00:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:00:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:00:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:00:52,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:00:52,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69471273] [2024-09-24 23:00:52,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69471273] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:00:52,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057331350] [2024-09-24 23:00:52,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:00:52,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:00:52,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:00:52,831 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) [2024-09-24 23:00:52,835 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:01:02,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-24 23:01:02,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:01:02,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-24 23:01:02,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:01:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:01:02,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:01:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-24 23:01:02,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057331350] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:01:02,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:01:02,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-09-24 23:01:02,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50269157] [2024-09-24 23:01:02,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:01:02,986 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-24 23:01:02,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:01:02,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-24 23:01:02,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-24 23:01:02,987 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) [2024-09-24 23:01:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:01:05,959 INFO L93 Difference]: Finished difference Result 160 states and 215 transitions. [2024-09-24 23:01:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-24 23:01:05,960 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 [2024-09-24 23:01:05,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:01:05,964 INFO L225 Difference]: With dead ends: 160 [2024-09-24 23:01:05,964 INFO L226 Difference]: Without dead ends: 150 [2024-09-24 23:01:05,965 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 [2024-09-24 23:01:05,965 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 96 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-09-24 23:01:05,966 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 586 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-24 23:01:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-09-24 23:01:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 86. [2024-09-24 23:01:05,983 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) [2024-09-24 23:01:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2024-09-24 23:01:05,984 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 82 [2024-09-24 23:01:05,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:01:05,985 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2024-09-24 23:01:05,985 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) [2024-09-24 23:01:05,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:01:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2024-09-24 23:01:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-09-24 23:01:05,988 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:01:05,988 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:01:06,005 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-24 23:01:06,188 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 [2024-09-24 23:01:06,189 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:01:06,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:01:06,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1141500916, now seen corresponding path program 4 times [2024-09-24 23:01:06,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:01:06,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367597209] [2024-09-24 23:01:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:01:06,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:01:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:01:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:01:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-24 23:01:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:01:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:01:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:01:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:01:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:01:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:01:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:01:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:01:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:01:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:01:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:01:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:01:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:01:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:01:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:01:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:01:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-24 23:01:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-24 23:01:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-24 23:01:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-24 23:01:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-24 23:01:07,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:01:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367597209] [2024-09-24 23:01:07,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367597209] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:01:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829840641] [2024-09-24 23:01:07,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:01:07,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:01:07,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:01:07,109 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) [2024-09-24 23:01:07,117 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:01:07,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:01:07,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:01:07,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-09-24 23:01:07,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:01:07,413 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 [2024-09-24 23:01:07,738 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:07,739 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 [2024-09-24 23:01:07,998 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:07,998 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 [2024-09-24 23:01:08,264 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:08,264 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 [2024-09-24 23:01:08,523 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:08,524 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 [2024-09-24 23:01:08,777 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:08,778 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 [2024-09-24 23:01:08,974 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:08,974 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 [2024-09-24 23:01:09,450 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:09,450 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 [2024-09-24 23:01:09,673 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:09,673 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 [2024-09-24 23:01:10,134 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:10,135 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 [2024-09-24 23:01:10,459 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:10,460 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 [2024-09-24 23:01:10,583 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:10,584 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 [2024-09-24 23:01:10,921 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:10,922 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 [2024-09-24 23:01:11,200 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:11,201 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 [2024-09-24 23:01:11,329 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:11,330 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 [2024-09-24 23:01:11,442 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:11,443 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 [2024-09-24 23:01:11,820 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:11,821 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 [2024-09-24 23:01:12,122 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:12,122 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 [2024-09-24 23:01:12,311 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:12,311 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 [2024-09-24 23:01:12,708 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:12,709 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 [2024-09-24 23:01:12,878 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:12,878 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 [2024-09-24 23:01:13,017 INFO L349 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2024-09-24 23:01:13,017 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 [2024-09-24 23:01:13,115 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 [2024-09-24 23:01:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 84 proven. 64 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2024-09-24 23:01:13,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:01:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829840641] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:01:17,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:01:17,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16] total 38 [2024-09-24 23:01:17,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445106933] [2024-09-24 23:01:17,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:01:17,524 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-24 23:01:17,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:01:17,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-24 23:01:17,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1751, Unknown=1, NotChecked=0, Total=1892 [2024-09-24 23:01:17,527 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) [2024-09-24 23:01:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:01:20,976 INFO L93 Difference]: Finished difference Result 180 states and 228 transitions. [2024-09-24 23:01:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-24 23:01:20,976 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 [2024-09-24 23:01:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:01:20,978 INFO L225 Difference]: With dead ends: 180 [2024-09-24 23:01:20,978 INFO L226 Difference]: Without dead ends: 170 [2024-09-24 23:01:20,981 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 171 SyntacticMatches, 32 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=667, Invalid=7522, Unknown=1, NotChecked=0, Total=8190 [2024-09-24 23:01:20,981 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 118 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:01:20,994 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 798 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-09-24 23:01:20,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-24 23:01:21,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 102. [2024-09-24 23:01:21,017 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) [2024-09-24 23:01:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2024-09-24 23:01:21,018 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 166 [2024-09-24 23:01:21,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:01:21,018 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2024-09-24 23:01:21,019 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) [2024-09-24 23:01:21,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:01:21,019 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2024-09-24 23:01:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-09-24 23:01:21,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:01:21,021 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] [2024-09-24 23:01:21,035 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:01:21,225 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 [2024-09-24 23:01:21,226 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:01:21,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:01:21,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1553173923, now seen corresponding path program 1 times [2024-09-24 23:01:21,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:01:21,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515421291] [2024-09-24 23:01:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:01:21,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:01:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:01:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:01:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-24 23:01:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:01:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:01:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:01:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:01:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:01:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:01:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:01:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:01:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:01:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:01:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:01:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:01:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:01:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:01:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:01:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:01:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-24 23:01:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-24 23:01:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-24 23:01:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-24 23:01:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-24 23:01:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-24 23:01:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-24 23:01:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 2 proven. 852 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2024-09-24 23:01:22,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:01:22,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515421291] [2024-09-24 23:01:22,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515421291] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:01:22,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542724075] [2024-09-24 23:01:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:01:22,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:01:22,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:01:22,098 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) [2024-09-24 23:01:22,101 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-24 23:01:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:22,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 198 conjuncts are in the unsatisfiable core [2024-09-24 23:01:22,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:01:22,317 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 [2024-09-24 23:01:22,591 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:22,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:23,052 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:23,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:23,435 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:23,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:23,780 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:23,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:23,945 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:23,945 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 46 treesize of output 59 [2024-09-24 23:01:24,087 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:24,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:24,345 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:24,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:24,485 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:24,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:24,960 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:24,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:25,168 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:25,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:25,467 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:25,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:25,710 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:25,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:26,069 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:26,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:26,513 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:26,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:26,713 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:26,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:27,138 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:27,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:27,556 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:27,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:27,671 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:27,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:28,071 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:28,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:28,328 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:28,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:28,619 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:28,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:28,882 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-09-24 23:01:28,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-09-24 23:01:29,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-09-24 23:01:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1960 backedges. 179 proven. 141 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2024-09-24 23:01:29,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:01:37,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542724075] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:01:37,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:01:37,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 18] total 41 [2024-09-24 23:01:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283603509] [2024-09-24 23:01:37,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:01:37,843 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-24 23:01:37,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:01:37,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-24 23:01:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1916, Unknown=2, NotChecked=0, Total=2070 [2024-09-24 23:01:37,844 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 29 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2024-09-24 23:01:41,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-24 23:01:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:01:45,507 INFO L93 Difference]: Finished difference Result 206 states and 256 transitions. [2024-09-24 23:01:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-24 23:01:45,507 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 29 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) Word has length 187 [2024-09-24 23:01:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:01:45,511 INFO L225 Difference]: With dead ends: 206 [2024-09-24 23:01:45,511 INFO L226 Difference]: Without dead ends: 190 [2024-09-24 23:01:45,513 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 198 SyntacticMatches, 40 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=700, Invalid=8228, Unknown=2, NotChecked=0, Total=8930 [2024-09-24 23:01:45,513 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 141 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 4702 mSolverCounterSat, 171 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 4874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 4702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:01:45,514 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1185 Invalid, 4874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 4702 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2024-09-24 23:01:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-09-24 23:01:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 119. [2024-09-24 23:01:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 80 states have (on average 1.025) internal successors, (82), 81 states have internal predecessors, (82), 31 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-24 23:01:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 143 transitions. [2024-09-24 23:01:45,539 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 143 transitions. Word has length 187 [2024-09-24 23:01:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:01:45,540 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 143 transitions. [2024-09-24 23:01:45,540 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 38 states have internal predecessors, (82), 29 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2024-09-24 23:01:45,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:01:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 143 transitions. [2024-09-24 23:01:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-09-24 23:01:45,542 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:01:45,542 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:01:45,556 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-24 23:01:45,743 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-24 23:01:45,743 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:01:45,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:01:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash 772297452, now seen corresponding path program 2 times [2024-09-24 23:01:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:01:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773051177] [2024-09-24 23:01:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:01:45,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:01:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:01:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:01:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-24 23:01:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-24 23:01:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:01:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:01:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-24 23:01:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-24 23:01:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:01:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:01:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-24 23:01:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-24 23:01:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:01:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:01:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:01:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-24 23:01:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:01:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-24 23:01:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-24 23:01:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-24 23:01:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-24 23:01:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-24 23:01:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-24 23:01:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-24 23:01:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-24 23:01:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-24 23:01:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-24 23:01:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-24 23:01:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-24 23:01:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:01:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 4 proven. 1001 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2024-09-24 23:01:46,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:01:46,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773051177] [2024-09-24 23:01:46,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773051177] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:01:46,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425544677] [2024-09-24 23:01:46,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:01:46,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:01:46,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:01:46,702 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:01:46,703 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-24 23:01:47,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:01:47,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:01:47,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-09-24 23:01:47,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:01:47,484 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 [2024-09-24 23:01:47,730 INFO L349 Elim1Store]: treesize reduction 39, result has 32.8 percent of original size [2024-09-24 23:01:47,731 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 [2024-09-24 23:01:48,103 INFO L349 Elim1Store]: treesize reduction 104, result has 27.3 percent of original size [2024-09-24 23:01:48,103 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 [2024-09-24 23:01:50,231 INFO L349 Elim1Store]: treesize reduction 1316, result has 21.5 percent of original size [2024-09-24 23:01:50,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 6 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 110 case distinctions, treesize of input 190 treesize of output 467 [2024-09-24 23:03:04,754 WARN L293 SmtUtils]: Spent 26.87s on a formula simplification. DAG size of input: 1089 DAG size of output: 1056 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)