./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c -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 ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 20:41:41,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:41:41,247 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 20:41:41,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:41:41,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:41:41,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:41:41,270 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:41:41,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:41:41,271 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:41:41,272 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:41:41,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:41:41,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:41:41,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:41:41,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:41:41,274 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:41:41,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:41:41,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:41:41,275 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:41:41,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 20:41:41,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:41:41,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:41:41,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:41:41,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:41:41,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:41:41,277 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:41:41,278 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:41:41,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:41:41,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:41:41,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:41:41,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:41:41,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:41:41,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:41:41,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:41:41,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:41:41,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:41:41,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:41:41,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 20:41:41,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 20:41:41,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:41:41,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:41:41,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:41:41,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:41:41,283 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 20:41:41,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:41:41,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:41:41,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:41:41,580 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:41:41,581 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:41:41,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-09-11 20:41:43,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:41:43,256 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:41:43,257 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-09-11 20:41:43,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9e7d82ba5/08f1f84994fb490eb3a65fd5cecc410e/FLAGf8ae5fbae [2024-09-11 20:41:43,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9e7d82ba5/08f1f84994fb490eb3a65fd5cecc410e [2024-09-11 20:41:43,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:41:43,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 20:41:43,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:41:43,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:41:43,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:41:43,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456296fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43, skipping insertion in model container [2024-09-11 20:41:43,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:41:43,501 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c[1052,1065] [2024-09-11 20:41:43,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:41:43,538 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 20:41:43,571 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c[1052,1065] [2024-09-11 20:41:43,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:41:43,619 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:41:43,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43 WrapperNode [2024-09-11 20:41:43,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:41:43,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 20:41:43,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 20:41:43,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 20:41:43,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,676 INFO L138 Inliner]: procedures = 16, calls = 58, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2024-09-11 20:41:43,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 20:41:43,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:41:43,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:41:43,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:41:43,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,709 INFO L175 MemorySlicer]: Split 33 memory accesses to 5 slices as follows [2, 9, 2, 12, 8]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 1, 2, 2]. [2024-09-11 20:41:43,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:41:43,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:41:43,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:41:43,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:41:43,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (1/1) ... [2024-09-11 20:41:43,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:41:43,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:41:43,761 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) [2024-09-11 20:41:43,763 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 [2024-09-11 20:41:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:41:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 20:41:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-11 20:41:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-11 20:41:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-11 20:41:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-11 20:41:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-11 20:41:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-11 20:41:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-11 20:41:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-11 20:41:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-11 20:41:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-11 20:41:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_40_0 [2024-09-11 20:41:43,808 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_40_0 [2024-09-11 20:41:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:41:43,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:41:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-11 20:41:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-11 20:41:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-11 20:41:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-11 20:41:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-11 20:41:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-11 20:41:43,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-11 20:41:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-11 20:41:43,891 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:41:43,892 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:41:44,038 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-11 20:41:44,038 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:41:44,062 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:41:44,063 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-11 20:41:44,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:41:44 BoogieIcfgContainer [2024-09-11 20:41:44,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:41:44,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 20:41:44,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 20:41:44,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 20:41:44,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:41:43" (1/3) ... [2024-09-11 20:41:44,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473cd580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:41:44, skipping insertion in model container [2024-09-11 20:41:44,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:41:43" (2/3) ... [2024-09-11 20:41:44,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473cd580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:41:44, skipping insertion in model container [2024-09-11 20:41:44,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:41:44" (3/3) ... [2024-09-11 20:41:44,071 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1-ll.c [2024-09-11 20:41:44,087 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 20:41:44,087 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 20:41:44,143 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 20:41:44,150 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;@2e6de40e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 20:41:44,150 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 20:41:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-11 20:41:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-11 20:41:44,160 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:41:44,161 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:41:44,161 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:41:44,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1408384077, now seen corresponding path program 1 times [2024-09-11 20:41:44,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:41:44,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927590021] [2024-09-11 20:41:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:41:44,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:41:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 20:41:44,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:41:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927590021] [2024-09-11 20:41:44,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927590021] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:41:44,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:41:44,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-11 20:41:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618125048] [2024-09-11 20:41:44,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:41:44,978 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 20:41:44,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:41:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 20:41:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-11 20:41:44,997 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 20:41:45,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:41:45,244 INFO L93 Difference]: Finished difference Result 72 states and 105 transitions. [2024-09-11 20:41:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 20:41:45,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-11 20:41:45,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:41:45,252 INFO L225 Difference]: With dead ends: 72 [2024-09-11 20:41:45,253 INFO L226 Difference]: Without dead ends: 44 [2024-09-11 20:41:45,256 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-11 20:41:45,259 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:41:45,260 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 121 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:41:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-11 20:41:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2024-09-11 20:41:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-11 20:41:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2024-09-11 20:41:45,311 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 8 [2024-09-11 20:41:45,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:41:45,312 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2024-09-11 20:41:45,312 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 20:41:45,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:45,314 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2024-09-11 20:41:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-11 20:41:45,315 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:41:45,315 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:41:45,315 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 20:41:45,316 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:41:45,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:45,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1735781632, now seen corresponding path program 1 times [2024-09-11 20:41:45,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:41:45,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331744945] [2024-09-11 20:41:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:41:45,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:41:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 20:41:45,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276641281] [2024-09-11 20:41:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:41:45,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:41:45,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:41:45,364 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) [2024-09-11 20:41:45,366 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 20:41:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:45,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-11 20:41:45,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:41:45,527 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 11 treesize of output 7 [2024-09-11 20:41:45,533 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 11 treesize of output 7 [2024-09-11 20:41:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 20:41:45,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:41:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 20:41:45,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:41:45,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331744945] [2024-09-11 20:41:45,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 20:41:45,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276641281] [2024-09-11 20:41:45,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276641281] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-11 20:41:45,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 20:41:45,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2024-09-11 20:41:45,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874442879] [2024-09-11 20:41:45,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:41:45,917 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 20:41:45,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:41:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 20:41:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-11 20:41:45,920 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:41:46,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:41:46,193 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2024-09-11 20:41:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 20:41:46,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-11 20:41:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:41:46,195 INFO L225 Difference]: With dead ends: 50 [2024-09-11 20:41:46,196 INFO L226 Difference]: Without dead ends: 48 [2024-09-11 20:41:46,196 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-11 20:41:46,197 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:41:46,198 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 123 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:41:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-11 20:41:46,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-09-11 20:41:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 30 states have internal predecessors, (31), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-11 20:41:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-09-11 20:41:46,226 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 14 [2024-09-11 20:41:46,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:41:46,227 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-09-11 20:41:46,228 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:41:46,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:46,228 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-09-11 20:41:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-11 20:41:46,229 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:41:46,229 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:41:46,250 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 20:41:46,432 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:41:46,433 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:41:46,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:46,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1054740085, now seen corresponding path program 1 times [2024-09-11 20:41:46,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:41:46,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919309562] [2024-09-11 20:41:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:41:46,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:41:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 20:41:46,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646143728] [2024-09-11 20:41:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:41:46,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:41:46,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:41:46,474 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) [2024-09-11 20:41:46,478 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 20:41:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:46,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-11 20:41:46,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:41:46,583 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 11 treesize of output 7 [2024-09-11 20:41:46,589 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 11 treesize of output 7 [2024-09-11 20:41:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 20:41:46,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:41:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 20:41:46,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:41:46,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919309562] [2024-09-11 20:41:46,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 20:41:46,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646143728] [2024-09-11 20:41:46,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646143728] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-11 20:41:46,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 20:41:46,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2024-09-11 20:41:46,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519483081] [2024-09-11 20:41:46,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:41:46,963 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 20:41:46,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:41:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 20:41:46,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-11 20:41:46,965 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-11 20:41:47,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:41:47,416 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2024-09-11 20:41:47,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 20:41:47,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-09-11 20:41:47,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:41:47,419 INFO L225 Difference]: With dead ends: 60 [2024-09-11 20:41:47,420 INFO L226 Difference]: Without dead ends: 58 [2024-09-11 20:41:47,420 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-11 20:41:47,421 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 20:41:47,421 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 20:41:47,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-11 20:41:47,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2024-09-11 20:41:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.09375) internal successors, (35), 34 states have internal predecessors, (35), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-11 20:41:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2024-09-11 20:41:47,447 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 20 [2024-09-11 20:41:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:41:47,447 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2024-09-11 20:41:47,447 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-11 20:41:47,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2024-09-11 20:41:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 20:41:47,450 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:41:47,450 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:41:47,467 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-11 20:41:47,654 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:41:47,655 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:41:47,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:47,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1398908834, now seen corresponding path program 1 times [2024-09-11 20:41:47,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:41:47,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039678139] [2024-09-11 20:41:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:41:47,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:41:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:48,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-11 20:41:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:48,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:41:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:48,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:41:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 20:41:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:41:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039678139] [2024-09-11 20:41:48,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039678139] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:41:48,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628539297] [2024-09-11 20:41:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:41:48,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:41:48,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:41:48,336 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) [2024-09-11 20:41:48,337 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 20:41:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:48,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-11 20:41:48,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:41:48,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-09-11 20:41:48,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-09-11 20:41:48,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-09-11 20:41:48,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-11 20:41:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 20:41:48,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:41:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 20:41:53,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628539297] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:41:53,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:41:53,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 21 [2024-09-11 20:41:53,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029913845] [2024-09-11 20:41:53,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:41:53,225 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-11 20:41:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:41:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-11 20:41:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=356, Unknown=1, NotChecked=0, Total=420 [2024-09-11 20:41:53,226 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 21 states, 16 states have (on average 2.25) internal successors, (36), 17 states have internal predecessors, (36), 9 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-11 20:41:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:41:55,958 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2024-09-11 20:41:55,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 20:41:55,959 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.25) internal successors, (36), 17 states have internal predecessors, (36), 9 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) Word has length 30 [2024-09-11 20:41:55,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:41:55,960 INFO L225 Difference]: With dead ends: 76 [2024-09-11 20:41:55,960 INFO L226 Difference]: Without dead ends: 74 [2024-09-11 20:41:55,961 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=155, Invalid=774, Unknown=1, NotChecked=0, Total=930 [2024-09-11 20:41:55,962 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 62 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-11 20:41:55,962 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 162 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-11 20:41:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-11 20:41:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2024-09-11 20:41:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 46 states have internal predecessors, (47), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (19), 15 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-11 20:41:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2024-09-11 20:41:55,999 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 30 [2024-09-11 20:41:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:41:55,999 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2024-09-11 20:41:56,002 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.25) internal successors, (36), 17 states have internal predecessors, (36), 9 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-11 20:41:56,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2024-09-11 20:41:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 20:41:56,004 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:41:56,004 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:41:56,020 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 20:41:56,204 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:41:56,205 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:41:56,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:56,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1438102184, now seen corresponding path program 1 times [2024-09-11 20:41:56,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:41:56,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113221079] [2024-09-11 20:41:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:41:56,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:41:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:56,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:41:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:56,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:41:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:56,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-11 20:41:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:56,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-11 20:41:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:41:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 20:41:56,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:41:56,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113221079] [2024-09-11 20:41:56,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113221079] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:41:56,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:41:56,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-11 20:41:56,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403798696] [2024-09-11 20:41:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:41:56,989 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 20:41:56,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:41:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 20:41:56,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-09-11 20:41:56,991 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-11 20:41:57,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:41:57,747 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2024-09-11 20:41:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 20:41:57,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-09-11 20:41:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:41:57,750 INFO L225 Difference]: With dead ends: 80 [2024-09-11 20:41:57,751 INFO L226 Difference]: Without dead ends: 78 [2024-09-11 20:41:57,751 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-11 20:41:57,752 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 20:41:57,752 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 61 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 20:41:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-11 20:41:57,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-09-11 20:41:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 51 states have internal predecessors, (52), 16 states have call successors, (16), 9 states have call predecessors, (16), 12 states have return successors, (21), 16 states have call predecessors, (21), 15 states have call successors, (21) [2024-09-11 20:41:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2024-09-11 20:41:57,786 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 30 [2024-09-11 20:41:57,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:41:57,786 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2024-09-11 20:41:57,787 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-11 20:41:57,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2024-09-11 20:41:57,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-11 20:41:57,788 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:41:57,788 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:41:57,788 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-11 20:41:57,789 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:41:57,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:41:57,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1912282705, now seen corresponding path program 2 times [2024-09-11 20:41:57,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:41:57,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157597826] [2024-09-11 20:41:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:41:57,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:41:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 20:41:57,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195376642] [2024-09-11 20:41:57,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:41:57,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:41:57,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:41:57,810 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) [2024-09-11 20:41:57,812 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 20:41:57,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:41:57,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:41:57,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-11 20:41:57,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:41:57,919 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 11 treesize of output 7 [2024-09-11 20:41:57,939 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 11 treesize of output 7 [2024-09-11 20:41:59,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-11 20:41:59,588 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-09-11 20:41:59,588 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 2 case distinctions, treesize of input 26 treesize of output 29 [2024-09-11 20:41:59,682 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-09-11 20:41:59,683 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 2 case distinctions, treesize of input 26 treesize of output 29 [2024-09-11 20:42:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 20:42:00,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:42:01,838 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 49 treesize of output 41 [2024-09-11 20:42:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-11 20:42:02,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:42:02,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157597826] [2024-09-11 20:42:02,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 20:42:02,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195376642] [2024-09-11 20:42:02,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195376642] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:42:02,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 20:42:02,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 28 [2024-09-11 20:42:02,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922057034] [2024-09-11 20:42:02,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 20:42:02,004 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-11 20:42:02,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:42:02,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-11 20:42:02,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2024-09-11 20:42:02,005 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 28 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 23 states have internal predecessors, (40), 11 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-11 20:42:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:42:06,923 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2024-09-11 20:42:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-11 20:42:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 23 states have internal predecessors, (40), 11 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Word has length 36 [2024-09-11 20:42:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:42:06,926 INFO L225 Difference]: With dead ends: 121 [2024-09-11 20:42:06,926 INFO L226 Difference]: Without dead ends: 119 [2024-09-11 20:42:06,927 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=318, Invalid=2034, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 20:42:06,928 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 90 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-09-11 20:42:06,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 226 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-09-11 20:42:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-09-11 20:42:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 105. [2024-09-11 20:42:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 71 states have internal predecessors, (73), 18 states have call successors, (18), 15 states have call predecessors, (18), 18 states have return successors, (22), 18 states have call predecessors, (22), 16 states have call successors, (22) [2024-09-11 20:42:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2024-09-11 20:42:06,976 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 36 [2024-09-11 20:42:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:42:06,977 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2024-09-11 20:42:06,977 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 23 states have internal predecessors, (40), 11 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-11 20:42:06,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2024-09-11 20:42:06,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-11 20:42:06,978 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:42:06,979 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:42:06,997 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-11 20:42:07,179 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 [2024-09-11 20:42:07,179 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:42:07,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:07,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1300709659, now seen corresponding path program 1 times [2024-09-11 20:42:07,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:42:07,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149679068] [2024-09-11 20:42:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:07,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:42:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 20:42:07,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479988556] [2024-09-11 20:42:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:07,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:42:07,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:42:07,207 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) [2024-09-11 20:42:07,208 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 20:42:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:07,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-11 20:42:07,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:42:07,306 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 11 treesize of output 7 [2024-09-11 20:42:07,326 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 11 treesize of output 7 [2024-09-11 20:42:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-11 20:42:07,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:42:08,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:42:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149679068] [2024-09-11 20:42:08,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 20:42:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479988556] [2024-09-11 20:42:08,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479988556] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:42:08,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-11 20:42:08,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-09-11 20:42:08,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498585300] [2024-09-11 20:42:08,253 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-11 20:42:08,254 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 20:42:08,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:42:08,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 20:42:08,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-11 20:42:08,255 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-11 20:42:09,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:42:09,135 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2024-09-11 20:42:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 20:42:09,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-09-11 20:42:09,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:42:09,136 INFO L225 Difference]: With dead ends: 113 [2024-09-11 20:42:09,136 INFO L226 Difference]: Without dead ends: 109 [2024-09-11 20:42:09,136 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-09-11 20:42:09,137 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 20:42:09,137 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 55 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 20:42:09,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-11 20:42:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2024-09-11 20:42:09,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 72 states have internal predecessors, (74), 18 states have call successors, (18), 16 states have call predecessors, (18), 18 states have return successors, (22), 18 states have call predecessors, (22), 16 states have call successors, (22) [2024-09-11 20:42:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2024-09-11 20:42:09,184 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 36 [2024-09-11 20:42:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:42:09,184 INFO L474 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2024-09-11 20:42:09,184 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-11 20:42:09,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:09,185 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2024-09-11 20:42:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-11 20:42:09,186 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:42:09,187 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:42:09,204 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 20:42:09,390 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 [2024-09-11 20:42:09,391 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:42:09,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:09,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1658463312, now seen corresponding path program 1 times [2024-09-11 20:42:09,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:42:09,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083851788] [2024-09-11 20:42:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:09,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:42:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 20:42:09,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393093826] [2024-09-11 20:42:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:09,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:42:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:42:09,410 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) [2024-09-11 20:42:09,419 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 20:42:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:09,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-11 20:42:09,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:42:09,522 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 11 treesize of output 7 [2024-09-11 20:42:09,541 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 11 treesize of output 7 [2024-09-11 20:42:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-11 20:42:10,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:42:10,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:42:10,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083851788] [2024-09-11 20:42:10,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 20:42:10,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393093826] [2024-09-11 20:42:10,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393093826] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:42:10,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-11 20:42:10,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-09-11 20:42:10,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413751803] [2024-09-11 20:42:10,713 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-11 20:42:10,713 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 20:42:10,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:42:10,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 20:42:10,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-11 20:42:10,714 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-11 20:42:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:42:11,442 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2024-09-11 20:42:11,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 20:42:11,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2024-09-11 20:42:11,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:42:11,444 INFO L225 Difference]: With dead ends: 109 [2024-09-11 20:42:11,444 INFO L226 Difference]: Without dead ends: 89 [2024-09-11 20:42:11,444 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-09-11 20:42:11,445 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 20:42:11,445 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 54 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 136 Invalid, 2 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 20:42:11,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-11 20:42:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-09-11 20:42:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 60 states have internal predecessors, (61), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-11 20:42:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2024-09-11 20:42:11,472 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 42 [2024-09-11 20:42:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:42:11,473 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2024-09-11 20:42:11,473 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-11 20:42:11,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:11,473 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2024-09-11 20:42:11,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-11 20:42:11,474 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:42:11,474 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:42:11,487 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-11 20:42:11,675 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:42:11,675 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:42:11,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:11,675 INFO L85 PathProgramCache]: Analyzing trace with hash 983693574, now seen corresponding path program 1 times [2024-09-11 20:42:11,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:42:11,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735602945] [2024-09-11 20:42:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:11,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:42:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:12,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-11 20:42:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:13,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:42:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:13,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-11 20:42:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:13,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-11 20:42:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:13,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-11 20:42:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:13,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:42:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:13,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-11 20:42:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:13,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-11 20:42:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-11 20:42:13,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:42:13,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735602945] [2024-09-11 20:42:13,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735602945] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:42:13,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882508604] [2024-09-11 20:42:13,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:13,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:42:13,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:42:13,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:42:13,930 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 20:42:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:14,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-11 20:42:14,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:42:15,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-09-11 20:42:15,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-09-11 20:42:15,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-09-11 20:42:15,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-11 20:42:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-11 20:42:15,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:42:16,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882508604] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:42:16,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-11 20:42:16,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2024-09-11 20:42:16,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568138050] [2024-09-11 20:42:16,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-11 20:42:16,943 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-11 20:42:16,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:42:16,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-11 20:42:16,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2024-09-11 20:42:16,945 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 25 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 21 states have internal predecessors, (40), 11 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-11 20:42:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:42:19,098 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2024-09-11 20:42:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-11 20:42:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 21 states have internal predecessors, (40), 11 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 9 states have call successors, (13) Word has length 54 [2024-09-11 20:42:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:42:19,099 INFO L225 Difference]: With dead ends: 98 [2024-09-11 20:42:19,099 INFO L226 Difference]: Without dead ends: 96 [2024-09-11 20:42:19,100 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 20:42:19,100 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:42:19,101 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 70 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-11 20:42:19,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-11 20:42:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2024-09-11 20:42:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 63 states have internal predecessors, (64), 15 states have call successors, (15), 14 states have call predecessors, (15), 16 states have return successors, (19), 15 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-11 20:42:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2024-09-11 20:42:19,134 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 54 [2024-09-11 20:42:19,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:42:19,134 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2024-09-11 20:42:19,134 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 21 states have internal predecessors, (40), 11 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-11 20:42:19,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2024-09-11 20:42:19,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-11 20:42:19,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:42:19,136 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:42:19,149 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-11 20:42:19,339 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:42:19,340 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:42:19,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1709019117, now seen corresponding path program 1 times [2024-09-11 20:42:19,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:42:19,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12282940] [2024-09-11 20:42:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:19,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:42:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 20:42:19,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324514105] [2024-09-11 20:42:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:19,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:42:19,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:42:19,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:42:19,368 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 20:42:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:19,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-09-11 20:42:19,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:42:19,511 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 11 treesize of output 7 [2024-09-11 20:42:19,530 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 11 treesize of output 7 [2024-09-11 20:42:20,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-09-11 20:42:24,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-11 20:42:24,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-11 20:42:24,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-11 20:42:24,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2024-09-11 20:42:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 60 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 20:42:25,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:42:32,889 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 81 treesize of output 69 [2024-09-11 20:42:34,420 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 54 treesize of output 30 [2024-09-11 20:42:34,439 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 30 treesize of output 22 [2024-09-11 20:42:36,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:42:36,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12282940] [2024-09-11 20:42:36,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 20:42:36,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324514105] [2024-09-11 20:42:36,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324514105] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:42:36,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-11 20:42:36,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2024-09-11 20:42:36,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802947369] [2024-09-11 20:42:36,661 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-11 20:42:36,661 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 20:42:36,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:42:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 20:42:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1392, Unknown=2, NotChecked=0, Total=1560 [2024-09-11 20:42:36,663 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand has 30 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 9 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-11 20:42:44,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:42:44,214 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2024-09-11 20:42:44,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 20:42:44,215 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 9 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) Word has length 60 [2024-09-11 20:42:44,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:42:44,216 INFO L225 Difference]: With dead ends: 115 [2024-09-11 20:42:44,216 INFO L226 Difference]: Without dead ends: 111 [2024-09-11 20:42:44,217 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=464, Invalid=3316, Unknown=2, NotChecked=0, Total=3782 [2024-09-11 20:42:44,218 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 48 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-09-11 20:42:44,218 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 75 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 626 Invalid, 4 Unknown, 0 Unchecked, 2.9s Time] [2024-09-11 20:42:44,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-11 20:42:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2024-09-11 20:42:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 73 states have internal predecessors, (75), 18 states have call successors, (18), 17 states have call predecessors, (18), 18 states have return successors, (21), 18 states have call predecessors, (21), 16 states have call successors, (21) [2024-09-11 20:42:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2024-09-11 20:42:44,270 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 60 [2024-09-11 20:42:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:42:44,271 INFO L474 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2024-09-11 20:42:44,271 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 9 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-11 20:42:44,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:44,271 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2024-09-11 20:42:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-11 20:42:44,272 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:42:44,272 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:42:44,286 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-11 20:42:44,473 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:42:44,473 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:42:44,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:44,474 INFO L85 PathProgramCache]: Analyzing trace with hash 308638302, now seen corresponding path program 1 times [2024-09-11 20:42:44,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:42:44,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593781189] [2024-09-11 20:42:44,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:44,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:42:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 20:42:44,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408954235] [2024-09-11 20:42:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:44,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:42:44,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:42:44,502 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:42:44,506 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 20:42:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:42:44,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-09-11 20:42:44,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:42:44,634 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 11 treesize of output 7 [2024-09-11 20:42:44,649 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 11 treesize of output 7 [2024-09-11 20:42:46,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-09-11 20:42:46,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-09-11 20:42:47,502 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 71 treesize of output 39 [2024-09-11 20:42:47,511 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 34 treesize of output 22 [2024-09-11 20:42:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 68 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 20:42:47,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:42:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:42:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593781189] [2024-09-11 20:42:50,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 20:42:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408954235] [2024-09-11 20:42:50,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408954235] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:42:50,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-11 20:42:50,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-11 20:42:50,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731414475] [2024-09-11 20:42:50,743 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-11 20:42:50,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 20:42:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:42:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 20:42:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-09-11 20:42:50,744 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand has 16 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-11 20:42:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:42:54,183 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2024-09-11 20:42:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 20:42:54,184 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 66 [2024-09-11 20:42:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:42:54,186 INFO L225 Difference]: With dead ends: 111 [2024-09-11 20:42:54,186 INFO L226 Difference]: Without dead ends: 89 [2024-09-11 20:42:54,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2024-09-11 20:42:54,187 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 17 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-11 20:42:54,187 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 58 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 366 Invalid, 5 Unknown, 0 Unchecked, 1.8s Time] [2024-09-11 20:42:54,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-11 20:42:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-09-11 20:42:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (17), 14 states have call predecessors, (17), 14 states have call successors, (17) [2024-09-11 20:42:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2024-09-11 20:42:54,257 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 66 [2024-09-11 20:42:54,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:42:54,257 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2024-09-11 20:42:54,257 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-11 20:42:54,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2024-09-11 20:42:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-11 20:42:54,259 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:42:54,259 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:42:54,277 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-11 20:42:54,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-11 20:42:54,461 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:42:54,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:42:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1670656193, now seen corresponding path program 2 times [2024-09-11 20:42:54,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:42:54,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193259012] [2024-09-11 20:42:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:42:54,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:42:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 20:42:54,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146191432] [2024-09-11 20:42:54,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:42:54,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:42:54,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:42:54,502 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:42:54,504 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-11 20:42:54,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:42:54,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:42:54,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-09-11 20:42:54,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:42:54,665 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 11 treesize of output 7 [2024-09-11 20:42:54,686 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 11 treesize of output 7 [2024-09-11 20:42:54,737 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 11 treesize of output 7 [2024-09-11 20:42:57,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-11 20:42:57,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-11 20:42:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 40 proven. 122 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-11 20:42:58,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:43:01,464 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 51 treesize of output 43 [2024-09-11 20:43:01,482 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 43 treesize of output 39 [2024-09-11 20:43:01,498 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 39 treesize of output 23 [2024-09-11 20:43:02,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:43:02,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193259012] [2024-09-11 20:43:02,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 20:43:02,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146191432] [2024-09-11 20:43:02,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146191432] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:43:02,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-11 20:43:02,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-09-11 20:43:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378933987] [2024-09-11 20:43:02,274 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-11 20:43:02,274 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 20:43:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:43:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 20:43:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-09-11 20:43:02,275 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 6 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-11 20:43:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:43:05,951 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2024-09-11 20:43:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 20:43:05,952 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 6 states have call predecessors, (13), 8 states have call successors, (13) Word has length 84 [2024-09-11 20:43:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:43:05,953 INFO L225 Difference]: With dead ends: 113 [2024-09-11 20:43:05,953 INFO L226 Difference]: Without dead ends: 109 [2024-09-11 20:43:05,953 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=214, Invalid=1426, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 20:43:05,954 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 35 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-11 20:43:05,954 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 79 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 435 Invalid, 3 Unknown, 0 Unchecked, 1.8s Time] [2024-09-11 20:43:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-11 20:43:06,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2024-09-11 20:43:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 18 states have call successors, (18), 17 states have call predecessors, (18), 17 states have return successors, (22), 18 states have call predecessors, (22), 16 states have call successors, (22) [2024-09-11 20:43:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 113 transitions. [2024-09-11 20:43:06,013 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 113 transitions. Word has length 84 [2024-09-11 20:43:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:43:06,014 INFO L474 AbstractCegarLoop]: Abstraction has 107 states and 113 transitions. [2024-09-11 20:43:06,014 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 17 states have internal predecessors, (38), 9 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 6 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-11 20:43:06,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:43:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 113 transitions. [2024-09-11 20:43:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-11 20:43:06,015 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:43:06,015 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:43:06,031 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-11 20:43:06,216 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-11 20:43:06,216 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:43:06,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:43:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -519102225, now seen corresponding path program 3 times [2024-09-11 20:43:06,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:43:06,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428152267] [2024-09-11 20:43:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:43:06,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:43:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 20:43:06,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225499707] [2024-09-11 20:43:06,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:43:06,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:43:06,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:43:06,267 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:43:06,270 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-11 20:43:06,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 20:43:06,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:43:06,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 162 conjuncts are in the unsatisfiable core [2024-09-11 20:43:06,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:43:06,471 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 11 treesize of output 7 [2024-09-11 20:43:08,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2024-09-11 20:43:08,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 33 [2024-09-11 20:43:10,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-11 20:43:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 177 proven. 72 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-09-11 20:43:11,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:43:14,882 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 62 treesize of output 54 [2024-09-11 20:43:14,889 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 70 treesize of output 50 [2024-09-11 20:43:17,193 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 133 treesize of output 113 [2024-09-11 20:43:17,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-11 20:43:17,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 189 treesize of output 188 [2024-09-11 20:43:19,325 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-11 20:43:19,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 189 treesize of output 188 [2024-09-11 20:43:19,338 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 119 treesize of output 99 [2024-09-11 20:43:19,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:43:19,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428152267] [2024-09-11 20:43:19,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-11 20:43:19,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225499707] [2024-09-11 20:43:19,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225499707] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:43:19,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-11 20:43:19,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2024-09-11 20:43:19,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439035645] [2024-09-11 20:43:19,983 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-11 20:43:19,984 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-11 20:43:19,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:43:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-11 20:43:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2024-09-11 20:43:19,985 INFO L87 Difference]: Start difference. First operand 107 states and 113 transitions. Second operand has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 21 states have internal predecessors, (37), 9 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-11 20:43:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:43:26,433 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2024-09-11 20:43:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-11 20:43:26,434 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 21 states have internal predecessors, (37), 9 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 108 [2024-09-11 20:43:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:43:26,435 INFO L225 Difference]: With dead ends: 131 [2024-09-11 20:43:26,435 INFO L226 Difference]: Without dead ends: 127 [2024-09-11 20:43:26,436 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 93 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=318, Invalid=2435, Unknown=3, NotChecked=0, Total=2756 [2024-09-11 20:43:26,436 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-09-11 20:43:26,436 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 114 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 866 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2024-09-11 20:43:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-11 20:43:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2024-09-11 20:43:26,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 18 states have call successors, (18), 17 states have call predecessors, (18), 18 states have return successors, (25), 19 states have call predecessors, (25), 16 states have call successors, (25) [2024-09-11 20:43:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2024-09-11 20:43:26,501 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 108 [2024-09-11 20:43:26,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:43:26,501 INFO L474 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2024-09-11 20:43:26,501 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 21 states have internal predecessors, (37), 9 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-11 20:43:26,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:43:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2024-09-11 20:43:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-11 20:43:26,503 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:43:26,503 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:43:26,516 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-11 20:43:26,703 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:43:26,704 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:43:26,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:43:26,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1946968221, now seen corresponding path program 4 times [2024-09-11 20:43:26,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:43:26,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997581599] [2024-09-11 20:43:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:43:26,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:43:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-11 20:43:26,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119608471] [2024-09-11 20:43:26,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:43:26,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:43:26,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:43:26,751 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:43:26,752 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-11 20:43:27,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:43:27,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:43:27,310 WARN L260 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 279 conjuncts are in the unsatisfiable core [2024-09-11 20:43:27,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:43:28,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-09-11 20:43:28,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-09-11 20:43:28,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-09-11 20:43:35,690 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_func_to_recursive_line_29_to_40_0_#in~s.base_BEFORE_CALL_48| Int) (|v_func_to_recursive_line_29_to_40_0_#in~s.offset_BEFORE_CALL_48| Int) (|func_to_recursive_line_29_to_40_0_#t~mem6| Int) (|v_func_to_recursive_line_29_to_40_0_#in~a.base_BEFORE_CALL_49| Int) (|v_func_to_recursive_line_29_to_40_0_#in~a.offset_BEFORE_CALL_49| Int)) (let ((.cse0 (select (select |c_#memory_int#1| |v_func_to_recursive_line_29_to_40_0_#in~a.base_BEFORE_CALL_49|) |v_func_to_recursive_line_29_to_40_0_#in~a.offset_BEFORE_CALL_49|))) (and (<= |func_to_recursive_line_29_to_40_0_#t~mem6| .cse0) (<= (select (select |c_#memory_int#4| |v_func_to_recursive_line_29_to_40_0_#in~s.base_BEFORE_CALL_48|) |v_func_to_recursive_line_29_to_40_0_#in~s.offset_BEFORE_CALL_48|) (+ (* |func_to_recursive_line_29_to_40_0_#t~mem6| .cse0) |func_to_recursive_line_29_to_40_0_#t~mem6| .cse0 1))))) is different from true [2024-09-11 20:43:48,140 INFO L349 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2024-09-11 20:43:48,140 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 2 case distinctions, treesize of input 206 treesize of output 209 [2024-09-11 20:43:48,790 INFO L349 Elim1Store]: treesize reduction 90, result has 47.7 percent of original size [2024-09-11 20:43:48,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 436 treesize of output 389 [2024-09-11 20:43:49,265 INFO L349 Elim1Store]: treesize reduction 48, result has 53.4 percent of original size [2024-09-11 20:43:49,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 372 treesize of output 378 [2024-09-11 20:44:01,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-11 20:44:01,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 109