./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.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 8571897e57404ad6e85df2c29745d5b56fa4d168673d3bc7c670c79b03a6c106 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 04:21:13,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 04:21:13,063 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 04:21:13,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 04:21:13,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 04:21:13,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 04:21:13,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 04:21:13,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 04:21:13,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 04:21:13,099 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 04:21:13,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 04:21:13,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 04:21:13,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 04:21:13,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 04:21:13,102 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 04:21:13,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 04:21:13,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 04:21:13,108 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 04:21:13,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 04:21:13,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 04:21:13,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 04:21:13,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 04:21:13,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 04:21:13,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 04:21:13,109 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 04:21:13,110 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 04:21:13,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 04:21:13,110 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 04:21:13,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 04:21:13,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 04:21:13,110 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 04:21:13,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 04:21:13,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 04:21:13,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 04:21:13,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 04:21:13,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 04:21:13,111 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 04:21:13,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 04:21:13,111 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 04:21:13,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 04:21:13,112 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 04:21:13,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 04:21:13,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8571897e57404ad6e85df2c29745d5b56fa4d168673d3bc7c670c79b03a6c106 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 04:21:13,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 04:21:13,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 04:21:13,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 04:21:13,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 04:21:13,323 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 04:21:13,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c [2024-09-13 04:21:14,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 04:21:14,592 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 04:21:14,594 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c [2024-09-13 04:21:14,601 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9adeff320/97f955f82ce3415abd4bf5e2cfb512ca/FLAG43cc318c4 [2024-09-13 04:21:15,016 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9adeff320/97f955f82ce3415abd4bf5e2cfb512ca [2024-09-13 04:21:15,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 04:21:15,018 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 04:21:15,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 04:21:15,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 04:21:15,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 04:21:15,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d264e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15, skipping insertion in model container [2024-09-13 04:21:15,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,041 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 04:21:15,173 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_hard2.c[1067,1080] [2024-09-13 04:21:15,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 04:21:15,206 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 04:21:15,216 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_hard2.c[1067,1080] [2024-09-13 04:21:15,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 04:21:15,246 INFO L204 MainTranslator]: Completed translation [2024-09-13 04:21:15,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15 WrapperNode [2024-09-13 04:21:15,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 04:21:15,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 04:21:15,247 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 04:21:15,247 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 04:21:15,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,269 INFO L138 Inliner]: procedures = 17, calls = 90, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 04:21:15,269 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 04:21:15,269 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 04:21:15,270 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 04:21:15,270 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 04:21:15,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,281 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,303 INFO L175 MemorySlicer]: Split 56 memory accesses to 8 slices as follows [2, 12, 8, 6, 8, 5, 6, 9]. 21 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 0, 8, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 3, 0, 1, 2, 1, 2, 3]. [2024-09-13 04:21:15,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,312 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,316 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 04:21:15,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 04:21:15,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 04:21:15,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 04:21:15,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (1/1) ... [2024-09-13 04:21:15,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 04:21:15,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:21:15,353 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) [2024-09-13 04:21:15,361 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 [2024-09-13 04:21:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 04:21:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_50_0 [2024-09-13 04:21:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_50_0 [2024-09-13 04:21:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 04:21:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 04:21:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 04:21:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 04:21:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-13 04:21:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-13 04:21:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-13 04:21:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-13 04:21:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-09-13 04:21:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-09-13 04:21:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 04:21:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-13 04:21:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-13 04:21:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-13 04:21:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-13 04:21:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-13 04:21:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-13 04:21:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-09-13 04:21:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-09-13 04:21:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 04:21:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 04:21:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_37_0 [2024-09-13 04:21:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_37_0 [2024-09-13 04:21:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 04:21:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 04:21:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-13 04:21:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-13 04:21:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-13 04:21:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-13 04:21:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-13 04:21:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-13 04:21:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-09-13 04:21:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-09-13 04:21:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 04:21:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 04:21:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 04:21:15,502 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 04:21:15,504 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 04:21:15,737 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-13 04:21:15,737 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 04:21:15,759 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 04:21:15,762 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 04:21:15,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 04:21:15 BoogieIcfgContainer [2024-09-13 04:21:15,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 04:21:15,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 04:21:15,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 04:21:15,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 04:21:15,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 04:21:15" (1/3) ... [2024-09-13 04:21:15,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5366cbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 04:21:15, skipping insertion in model container [2024-09-13 04:21:15,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:21:15" (2/3) ... [2024-09-13 04:21:15,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5366cbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 04:21:15, skipping insertion in model container [2024-09-13 04:21:15,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 04:21:15" (3/3) ... [2024-09-13 04:21:15,769 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_hard2.c [2024-09-13 04:21:15,782 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 04:21:15,782 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 04:21:15,832 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 04:21:15,839 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;@5c73749c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 04:21:15,840 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 04:21:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-13 04:21:15,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-13 04:21:15,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:15,848 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:15,848 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:15,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:15,852 INFO L85 PathProgramCache]: Analyzing trace with hash -237389290, now seen corresponding path program 1 times [2024-09-13 04:21:15,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:15,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404247272] [2024-09-13 04:21:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:15,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:16,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:21:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 04:21:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404247272] [2024-09-13 04:21:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404247272] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 04:21:16,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 04:21:16,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-13 04:21:16,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727921002] [2024-09-13 04:21:16,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:21:16,325 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 04:21:16,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:16,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 04:21:16,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-13 04:21:16,344 INFO L87 Difference]: Start difference. First operand has 44 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 04:21:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:16,483 INFO L93 Difference]: Finished difference Result 86 states and 122 transitions. [2024-09-13 04:21:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 04:21:16,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-13 04:21:16,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:16,490 INFO L225 Difference]: With dead ends: 86 [2024-09-13 04:21:16,490 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 04:21:16,492 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-13 04:21:16,494 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 18 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:16,495 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 255 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 04:21:16,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 04:21:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-09-13 04:21:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.16) internal successors, (29), 28 states have internal predecessors, (29), 13 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 04:21:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-09-13 04:21:16,522 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 12 [2024-09-13 04:21:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:16,522 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-09-13 04:21:16,522 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 04:21:16,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-09-13 04:21:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-13 04:21:16,524 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:16,524 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:16,524 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 04:21:16,524 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:16,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:16,525 INFO L85 PathProgramCache]: Analyzing trace with hash -603068878, now seen corresponding path program 1 times [2024-09-13 04:21:16,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:16,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456426582] [2024-09-13 04:21:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:16,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:16,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:21:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:16,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:21:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 04:21:16,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:16,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456426582] [2024-09-13 04:21:16,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456426582] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 04:21:16,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 04:21:16,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-13 04:21:16,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697069645] [2024-09-13 04:21:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:21:16,809 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 04:21:16,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:16,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 04:21:16,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-13 04:21:16,811 INFO L87 Difference]: Start difference. First operand 44 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), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 04:21:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:16,919 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2024-09-13 04:21:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 04:21:16,920 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), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-09-13 04:21:16,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:16,921 INFO L225 Difference]: With dead ends: 50 [2024-09-13 04:21:16,921 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 04:21:16,923 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-13 04:21:16,924 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 17 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:16,924 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 240 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 04:21:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 04:21:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-13 04:21:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 04:21:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-09-13 04:21:16,935 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 18 [2024-09-13 04:21:16,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:16,935 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-09-13 04:21:16,936 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), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 04:21:16,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-09-13 04:21:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 04:21:16,937 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:16,937 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:16,937 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 04:21:16,937 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:16,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1373219252, now seen corresponding path program 1 times [2024-09-13 04:21:16,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:16,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669673806] [2024-09-13 04:21:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:16,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:21:16,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873257773] [2024-09-13 04:21:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:16,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:16,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:21:16,968 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) [2024-09-13 04:21:16,970 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 04:21:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:17,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-13 04:21:17,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:21:17,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:21:17,112 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 [2024-09-13 04:21:17,116 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 [2024-09-13 04:21:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:21:17,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:21:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:21:17,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:17,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669673806] [2024-09-13 04:21:17,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:21:17,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873257773] [2024-09-13 04:21:17,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873257773] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 04:21:17,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:21:17,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2024-09-13 04:21:17,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719619773] [2024-09-13 04:21:17,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:21:17,481 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 04:21:17,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 04:21:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-13 04:21:17,482 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 04:21:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:17,666 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2024-09-13 04:21:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 04:21:17,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-09-13 04:21:17,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:17,669 INFO L225 Difference]: With dead ends: 59 [2024-09-13 04:21:17,669 INFO L226 Difference]: Without dead ends: 57 [2024-09-13 04:21:17,669 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-13 04:21:17,670 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:17,670 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 232 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 04:21:17,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-13 04:21:17,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2024-09-13 04:21:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 04:21:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2024-09-13 04:21:17,683 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 24 [2024-09-13 04:21:17,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:17,683 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2024-09-13 04:21:17,683 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 04:21:17,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2024-09-13 04:21:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-13 04:21:17,684 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:17,684 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, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:17,700 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 04:21:17,889 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:17,890 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:17,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:17,890 INFO L85 PathProgramCache]: Analyzing trace with hash 257250778, now seen corresponding path program 1 times [2024-09-13 04:21:17,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:17,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922422480] [2024-09-13 04:21:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:17,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:21:17,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893053649] [2024-09-13 04:21:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:17,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:17,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:21:17,918 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) [2024-09-13 04:21:17,919 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 04:21:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:18,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-09-13 04:21:18,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:21:18,022 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 [2024-09-13 04:21:18,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:21:18,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 04:21:18,036 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 [2024-09-13 04:21:18,309 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 [2024-09-13 04:21:18,312 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 15 treesize of output 7 [2024-09-13 04:21:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 04:21:18,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:21:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 04:21:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:18,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922422480] [2024-09-13 04:21:18,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:21:18,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893053649] [2024-09-13 04:21:18,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893053649] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 04:21:18,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:21:18,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2024-09-13 04:21:18,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392100777] [2024-09-13 04:21:18,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:21:18,506 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 04:21:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 04:21:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-13 04:21:18,507 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 04:21:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:18,695 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2024-09-13 04:21:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 04:21:18,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-09-13 04:21:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:18,697 INFO L225 Difference]: With dead ends: 72 [2024-09-13 04:21:18,697 INFO L226 Difference]: Without dead ends: 70 [2024-09-13 04:21:18,697 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-13 04:21:18,698 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:18,698 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 252 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 04:21:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-13 04:21:18,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-09-13 04:21:18,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 46 states have internal predecessors, (48), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2024-09-13 04:21:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2024-09-13 04:21:18,717 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 36 [2024-09-13 04:21:18,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:18,718 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2024-09-13 04:21:18,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 04:21:18,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:18,718 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2024-09-13 04:21:18,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-13 04:21:18,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:18,719 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, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:18,736 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 04:21:18,919 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:18,920 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:18,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:18,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1949399703, now seen corresponding path program 1 times [2024-09-13 04:21:18,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:18,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568255397] [2024-09-13 04:21:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:18,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:21:18,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81397873] [2024-09-13 04:21:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:18,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:18,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:21:18,948 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) [2024-09-13 04:21:18,949 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 04:21:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:19,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-09-13 04:21:19,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:21:19,045 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 [2024-09-13 04:21:19,048 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 [2024-09-13 04:21:19,051 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 [2024-09-13 04:21:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 04:21:19,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:21:20,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:20,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568255397] [2024-09-13 04:21:20,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:21:20,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81397873] [2024-09-13 04:21:20,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81397873] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:21:20,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:21:20,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-09-13 04:21:20,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843487584] [2024-09-13 04:21:20,810 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:21:20,810 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 04:21:20,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:20,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 04:21:20,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-09-13 04:21:20,811 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 04:21:21,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:21,228 INFO L93 Difference]: Finished difference Result 126 states and 143 transitions. [2024-09-13 04:21:21,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 04:21:21,228 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2024-09-13 04:21:21,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:21,230 INFO L225 Difference]: With dead ends: 126 [2024-09-13 04:21:21,230 INFO L226 Difference]: Without dead ends: 124 [2024-09-13 04:21:21,231 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2024-09-13 04:21:21,231 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 84 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:21,232 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 132 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 04:21:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-09-13 04:21:21,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2024-09-13 04:21:21,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 81 states have internal predecessors, (86), 24 states have call successors, (24), 18 states have call predecessors, (24), 20 states have return successors, (30), 22 states have call predecessors, (30), 21 states have call successors, (30) [2024-09-13 04:21:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 140 transitions. [2024-09-13 04:21:21,259 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 140 transitions. Word has length 42 [2024-09-13 04:21:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:21,259 INFO L474 AbstractCegarLoop]: Abstraction has 122 states and 140 transitions. [2024-09-13 04:21:21,259 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 04:21:21,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 140 transitions. [2024-09-13 04:21:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-13 04:21:21,261 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:21,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:21,273 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 04:21:21,461 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:21,462 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:21,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:21,462 INFO L85 PathProgramCache]: Analyzing trace with hash -605627993, now seen corresponding path program 1 times [2024-09-13 04:21:21,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:21,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56329939] [2024-09-13 04:21:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:21,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:21:21,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535661532] [2024-09-13 04:21:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:21,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:21,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:21:21,488 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) [2024-09-13 04:21:21,489 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 04:21:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:21,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-13 04:21:21,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:21:21,598 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 [2024-09-13 04:21:21,601 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 [2024-09-13 04:21:21,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:21:21,770 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 11 treesize of output 7 [2024-09-13 04:21:21,842 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 [2024-09-13 04:21:21,845 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 15 treesize of output 7 [2024-09-13 04:21:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 04:21:21,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:21:22,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:22,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56329939] [2024-09-13 04:21:22,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:21:22,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535661532] [2024-09-13 04:21:22,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535661532] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:21:22,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:21:22,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-13 04:21:22,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871893735] [2024-09-13 04:21:22,008 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:21:22,009 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 04:21:22,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 04:21:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-13 04:21:22,011 INFO L87 Difference]: Start difference. First operand 122 states and 140 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 04:21:22,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:22,308 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2024-09-13 04:21:22,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 04:21:22,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 52 [2024-09-13 04:21:22,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:22,310 INFO L225 Difference]: With dead ends: 140 [2024-09-13 04:21:22,310 INFO L226 Difference]: Without dead ends: 136 [2024-09-13 04:21:22,310 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-09-13 04:21:22,311 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:22,311 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 88 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 04:21:22,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-13 04:21:22,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2024-09-13 04:21:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 87 states have internal predecessors, (93), 26 states have call successors, (26), 20 states have call predecessors, (26), 21 states have return successors, (31), 24 states have call predecessors, (31), 22 states have call successors, (31) [2024-09-13 04:21:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 150 transitions. [2024-09-13 04:21:22,353 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 150 transitions. Word has length 52 [2024-09-13 04:21:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:22,353 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 150 transitions. [2024-09-13 04:21:22,353 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 04:21:22,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:22,354 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 150 transitions. [2024-09-13 04:21:22,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-13 04:21:22,354 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:22,354 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-09-13 04:21:22,368 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 04:21:22,558 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 [2024-09-13 04:21:22,559 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:22,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:22,560 INFO L85 PathProgramCache]: Analyzing trace with hash -649217709, now seen corresponding path program 1 times [2024-09-13 04:21:22,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:22,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739014392] [2024-09-13 04:21:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:22,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:22,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:21:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:22,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:21:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:22,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:21:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:22,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:21:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:22,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 04:21:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:22,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-13 04:21:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:22,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 04:21:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-13 04:21:22,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:22,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739014392] [2024-09-13 04:21:22,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739014392] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 04:21:22,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 04:21:22,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-13 04:21:22,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054514651] [2024-09-13 04:21:22,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:21:22,774 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 04:21:22,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 04:21:22,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-13 04:21:22,775 INFO L87 Difference]: Start difference. First operand 132 states and 150 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 5 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-13 04:21:22,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:22,951 INFO L93 Difference]: Finished difference Result 180 states and 207 transitions. [2024-09-13 04:21:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 04:21:22,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 5 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 53 [2024-09-13 04:21:22,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:22,953 INFO L225 Difference]: With dead ends: 180 [2024-09-13 04:21:22,953 INFO L226 Difference]: Without dead ends: 132 [2024-09-13 04:21:22,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-09-13 04:21:22,954 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:22,954 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 104 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 04:21:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-09-13 04:21:23,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2024-09-13 04:21:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 86 states have internal predecessors, (91), 26 states have call successors, (26), 20 states have call predecessors, (26), 20 states have return successors, (27), 24 states have call predecessors, (27), 22 states have call successors, (27) [2024-09-13 04:21:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2024-09-13 04:21:23,007 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 53 [2024-09-13 04:21:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:23,008 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2024-09-13 04:21:23,008 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 5 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-13 04:21:23,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2024-09-13 04:21:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-13 04:21:23,010 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:23,010 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:23,010 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 04:21:23,011 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:23,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:23,011 INFO L85 PathProgramCache]: Analyzing trace with hash 217789429, now seen corresponding path program 1 times [2024-09-13 04:21:23,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:23,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295336402] [2024-09-13 04:21:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:23,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:21:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:21:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:21:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:21:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 04:21:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 04:21:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:21:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:21:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-13 04:21:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 04:21:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:23,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295336402] [2024-09-13 04:21:23,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295336402] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 04:21:23,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 04:21:23,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-13 04:21:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242150827] [2024-09-13 04:21:23,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:21:23,217 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 04:21:23,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 04:21:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-09-13 04:21:23,217 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 04:21:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:23,392 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2024-09-13 04:21:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 04:21:23,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 58 [2024-09-13 04:21:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:23,394 INFO L225 Difference]: With dead ends: 134 [2024-09-13 04:21:23,394 INFO L226 Difference]: Without dead ends: 102 [2024-09-13 04:21:23,394 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-13 04:21:23,395 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 45 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:23,395 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 74 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 04:21:23,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-13 04:21:23,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2024-09-13 04:21:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 66 states have internal predecessors, (70), 21 states have call successors, (21), 15 states have call predecessors, (21), 15 states have return successors, (22), 19 states have call predecessors, (22), 18 states have call successors, (22) [2024-09-13 04:21:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2024-09-13 04:21:23,415 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 58 [2024-09-13 04:21:23,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:23,416 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2024-09-13 04:21:23,416 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 04:21:23,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2024-09-13 04:21:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-13 04:21:23,420 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:23,420 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, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:23,420 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-13 04:21:23,420 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:23,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:23,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1027870564, now seen corresponding path program 1 times [2024-09-13 04:21:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:23,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080938089] [2024-09-13 04:21:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:23,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:21:23,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897150060] [2024-09-13 04:21:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:23,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:23,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:21:23,467 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) [2024-09-13 04:21:23,468 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 04:21:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:21:23,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-09-13 04:21:23,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:21:23,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:21:23,583 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 [2024-09-13 04:21:23,586 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 [2024-09-13 04:21:23,830 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 [2024-09-13 04:21:23,834 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 [2024-09-13 04:21:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-13 04:21:23,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:21:24,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:24,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080938089] [2024-09-13 04:21:24,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:21:24,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897150060] [2024-09-13 04:21:24,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897150060] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:21:24,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:21:24,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-13 04:21:24,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443694335] [2024-09-13 04:21:24,247 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:21:24,247 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-13 04:21:24,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:24,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-13 04:21:24,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-09-13 04:21:24,248 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-13 04:21:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:24,760 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2024-09-13 04:21:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 04:21:24,760 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 66 [2024-09-13 04:21:24,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:24,761 INFO L225 Difference]: With dead ends: 134 [2024-09-13 04:21:24,762 INFO L226 Difference]: Without dead ends: 132 [2024-09-13 04:21:24,762 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2024-09-13 04:21:24,762 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:24,762 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 136 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 04:21:24,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-09-13 04:21:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2024-09-13 04:21:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 85 states have internal predecessors, (91), 26 states have call successors, (26), 19 states have call predecessors, (26), 21 states have return successors, (32), 25 states have call predecessors, (32), 22 states have call successors, (32) [2024-09-13 04:21:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2024-09-13 04:21:24,797 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 66 [2024-09-13 04:21:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:24,798 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2024-09-13 04:21:24,798 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-13 04:21:24,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2024-09-13 04:21:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-13 04:21:24,799 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:24,799 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, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:24,813 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 04:21:24,999 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:25,000 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:25,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:25,000 INFO L85 PathProgramCache]: Analyzing trace with hash -409790049, now seen corresponding path program 2 times [2024-09-13 04:21:25,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:25,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257741902] [2024-09-13 04:21:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:25,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:21:25,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212430935] [2024-09-13 04:21:25,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 04:21:25,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:25,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:21:25,036 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) [2024-09-13 04:21:25,037 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 04:21:25,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 04:21:25,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:21:25,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-09-13 04:21:25,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:21:25,194 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 [2024-09-13 04:21:25,197 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 [2024-09-13 04:21:25,200 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 [2024-09-13 04:21:25,628 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 [2024-09-13 04:21:25,631 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 [2024-09-13 04:21:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 36 proven. 43 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-13 04:21:25,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:21:26,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:26,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257741902] [2024-09-13 04:21:26,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:21:26,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212430935] [2024-09-13 04:21:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212430935] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:21:26,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:21:26,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-13 04:21:26,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379684007] [2024-09-13 04:21:26,349 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:21:26,349 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 04:21:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 04:21:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-09-13 04:21:26,351 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand has 16 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-13 04:21:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:27,137 INFO L93 Difference]: Finished difference Result 162 states and 185 transitions. [2024-09-13 04:21:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 04:21:27,137 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 90 [2024-09-13 04:21:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:27,138 INFO L225 Difference]: With dead ends: 162 [2024-09-13 04:21:27,139 INFO L226 Difference]: Without dead ends: 160 [2024-09-13 04:21:27,139 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2024-09-13 04:21:27,139 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 55 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:27,139 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 244 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 04:21:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-13 04:21:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 132. [2024-09-13 04:21:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 83 states have (on average 1.108433734939759) internal successors, (92), 86 states have internal predecessors, (92), 26 states have call successors, (26), 19 states have call predecessors, (26), 22 states have return successors, (34), 26 states have call predecessors, (34), 22 states have call successors, (34) [2024-09-13 04:21:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 152 transitions. [2024-09-13 04:21:27,168 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 152 transitions. Word has length 90 [2024-09-13 04:21:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:27,168 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 152 transitions. [2024-09-13 04:21:27,168 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-13 04:21:27,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 152 transitions. [2024-09-13 04:21:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-09-13 04:21:27,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:27,170 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, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:27,183 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 04:21:27,370 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 04:21:27,370 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:27,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:27,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1410569242, now seen corresponding path program 3 times [2024-09-13 04:21:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:27,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94219579] [2024-09-13 04:21:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:27,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:21:27,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007081837] [2024-09-13 04:21:27,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 04:21:27,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:27,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:21:27,410 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) [2024-09-13 04:21:27,411 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 04:21:27,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 04:21:27,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:21:27,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 153 conjuncts are in the unsatisfiable core [2024-09-13 04:21:27,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:21:27,617 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 [2024-09-13 04:21:27,622 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 [2024-09-13 04:21:27,627 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 [2024-09-13 04:21:28,206 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 [2024-09-13 04:21:28,215 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 [2024-09-13 04:21:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 72 proven. 73 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2024-09-13 04:21:28,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:21:29,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:21:29,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94219579] [2024-09-13 04:21:29,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:21:29,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007081837] [2024-09-13 04:21:29,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007081837] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:21:29,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:21:29,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-09-13 04:21:29,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279039476] [2024-09-13 04:21:29,338 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:21:29,339 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 04:21:29,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:21:29,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 04:21:29,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2024-09-13 04:21:29,339 INFO L87 Difference]: Start difference. First operand 132 states and 152 transitions. Second operand has 20 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-13 04:21:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:21:30,383 INFO L93 Difference]: Finished difference Result 164 states and 188 transitions. [2024-09-13 04:21:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 04:21:30,383 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 114 [2024-09-13 04:21:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:21:30,384 INFO L225 Difference]: With dead ends: 164 [2024-09-13 04:21:30,384 INFO L226 Difference]: Without dead ends: 162 [2024-09-13 04:21:30,385 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=1211, Unknown=0, NotChecked=0, Total=1406 [2024-09-13 04:21:30,385 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 49 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-13 04:21:30,385 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 288 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-13 04:21:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-09-13 04:21:30,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 134. [2024-09-13 04:21:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 87 states have internal predecessors, (93), 26 states have call successors, (26), 19 states have call predecessors, (26), 23 states have return successors, (36), 27 states have call predecessors, (36), 22 states have call successors, (36) [2024-09-13 04:21:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 155 transitions. [2024-09-13 04:21:30,417 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 155 transitions. Word has length 114 [2024-09-13 04:21:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:21:30,417 INFO L474 AbstractCegarLoop]: Abstraction has 134 states and 155 transitions. [2024-09-13 04:21:30,417 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 9 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-13 04:21:30,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 155 transitions. [2024-09-13 04:21:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-09-13 04:21:30,418 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:21:30,418 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, 1, 1, 1, 1, 1, 1] [2024-09-13 04:21:30,426 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 04:21:30,618 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:30,619 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:21:30,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:21:30,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1625386709, now seen corresponding path program 4 times [2024-09-13 04:21:30,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:21:30,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116750036] [2024-09-13 04:21:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:21:30,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:21:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:21:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193607893] [2024-09-13 04:21:30,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 04:21:30,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:21:30,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:21:30,662 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) [2024-09-13 04:21:30,663 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 04:21:30,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 04:21:30,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:21:30,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 221 conjuncts are in the unsatisfiable core [2024-09-13 04:21:30,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:21:31,026 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 35 treesize of output 23 [2024-09-13 04:21:31,043 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 37 treesize of output 25 [2024-09-13 04:21:31,090 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 31 treesize of output 23 [2024-09-13 04:21:31,096 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 15 treesize of output 11 [2024-09-13 04:21:31,968 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 48 treesize of output 32 [2024-09-13 04:21:31,977 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 45 treesize of output 33 [2024-09-13 04:21:32,744 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 33 [2024-09-13 04:21:32,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-09-13 04:21:32,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-09-13 04:21:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 151 proven. 87 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-09-13 04:21:32,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:22:01,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:22:01,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116750036] [2024-09-13 04:22:01,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:22:01,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193607893] [2024-09-13 04:22:01,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193607893] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:22:01,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:22:01,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2024-09-13 04:22:01,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875347028] [2024-09-13 04:22:01,410 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:22:01,410 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-13 04:22:01,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:22:01,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-13 04:22:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=893, Unknown=4, NotChecked=0, Total=992 [2024-09-13 04:22:01,411 INFO L87 Difference]: Start difference. First operand 134 states and 155 transitions. Second operand has 24 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2024-09-13 04:22:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:22:06,928 INFO L93 Difference]: Finished difference Result 163 states and 184 transitions. [2024-09-13 04:22:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-13 04:22:06,928 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) Word has length 138 [2024-09-13 04:22:06,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:22:06,930 INFO L225 Difference]: With dead ends: 163 [2024-09-13 04:22:06,930 INFO L226 Difference]: Without dead ends: 161 [2024-09-13 04:22:06,930 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=259, Invalid=2287, Unknown=4, NotChecked=0, Total=2550 [2024-09-13 04:22:06,931 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 55 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-13 04:22:06,931 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 400 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-13 04:22:06,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-09-13 04:22:06,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 127. [2024-09-13 04:22:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 84 states have internal predecessors, (90), 25 states have call successors, (25), 19 states have call predecessors, (25), 20 states have return successors, (27), 23 states have call predecessors, (27), 21 states have call successors, (27) [2024-09-13 04:22:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 142 transitions. [2024-09-13 04:22:06,965 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 142 transitions. Word has length 138 [2024-09-13 04:22:06,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:22:06,966 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 142 transitions. [2024-09-13 04:22:06,966 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (14), 11 states have call predecessors, (14), 8 states have call successors, (14) [2024-09-13 04:22:06,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:06,966 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 142 transitions. [2024-09-13 04:22:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-13 04:22:06,966 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:22:06,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:22:06,980 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 04:22:07,167 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:22:07,167 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:22:07,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:07,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1593861602, now seen corresponding path program 1 times [2024-09-13 04:22:07,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:22:07,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413616279] [2024-09-13 04:22:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:22:07,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:22:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:22:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:22:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:22:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:22:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 04:22:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 04:22:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:22:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:22:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 04:22:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-13 04:22:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:22:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:22:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-13 04:22:07,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:22:07,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413616279] [2024-09-13 04:22:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413616279] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:22:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448596000] [2024-09-13 04:22:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:22:07,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:22:07,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:22:07,642 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) [2024-09-13 04:22:07,644 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 04:22:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:07,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-13 04:22:07,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:22:07,774 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 [2024-09-13 04:22:07,881 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 [2024-09-13 04:22:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-13 04:22:07,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:22:08,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448596000] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:22:08,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 04:22:08,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 18 [2024-09-13 04:22:08,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735795165] [2024-09-13 04:22:08,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 04:22:08,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 04:22:08,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:22:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 04:22:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-09-13 04:22:08,197 INFO L87 Difference]: Start difference. First operand 127 states and 142 transitions. Second operand has 18 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 11 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-13 04:22:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:22:08,786 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2024-09-13 04:22:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 04:22:08,787 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 11 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 76 [2024-09-13 04:22:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:22:08,788 INFO L225 Difference]: With dead ends: 143 [2024-09-13 04:22:08,788 INFO L226 Difference]: Without dead ends: 133 [2024-09-13 04:22:08,788 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2024-09-13 04:22:08,788 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 34 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 04:22:08,789 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 118 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 04:22:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-13 04:22:08,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2024-09-13 04:22:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 83 states have (on average 1.108433734939759) internal successors, (92), 86 states have internal predecessors, (92), 26 states have call successors, (26), 19 states have call predecessors, (26), 22 states have return successors, (33), 26 states have call predecessors, (33), 22 states have call successors, (33) [2024-09-13 04:22:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2024-09-13 04:22:08,828 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 76 [2024-09-13 04:22:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:22:08,828 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2024-09-13 04:22:08,828 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 11 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-13 04:22:08,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2024-09-13 04:22:08,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-13 04:22:08,829 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:22:08,829 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-09-13 04:22:08,846 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 04:22:09,029 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-13 04:22:09,030 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:22:09,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1184517000, now seen corresponding path program 1 times [2024-09-13 04:22:09,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:22:09,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48359375] [2024-09-13 04:22:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:22:09,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:22:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:22:09,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536825040] [2024-09-13 04:22:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:22:09,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:22:09,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:22:09,074 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) [2024-09-13 04:22:09,076 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 04:22:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:09,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 180 conjuncts are in the unsatisfiable core [2024-09-13 04:22:09,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:22:09,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 04:22:09,245 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 [2024-09-13 04:22:09,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-13 04:22:09,254 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 [2024-09-13 04:22:09,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:22:09,264 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 [2024-09-13 04:22:09,789 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 [2024-09-13 04:22:09,795 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 [2024-09-13 04:22:10,453 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 [2024-09-13 04:22:10,464 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 [2024-09-13 04:22:10,538 INFO L349 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2024-09-13 04:22:10,539 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 40 treesize of output 51 [2024-09-13 04:22:10,575 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-09-13 04:22:10,575 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 [2024-09-13 04:22:10,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:22:10,832 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 88 treesize of output 140 [2024-09-13 04:22:10,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:22:10,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 156 [2024-09-13 04:22:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 51 proven. 29 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-09-13 04:22:11,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:22:15,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:22:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48359375] [2024-09-13 04:22:15,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:22:15,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536825040] [2024-09-13 04:22:15,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536825040] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:22:15,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:22:15,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-09-13 04:22:15,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065150577] [2024-09-13 04:22:15,908 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:22:15,908 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 04:22:15,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:22:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 04:22:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=563, Unknown=1, NotChecked=0, Total=650 [2024-09-13 04:22:15,909 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand has 20 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 10 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-13 04:22:17,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:22:17,305 INFO L93 Difference]: Finished difference Result 174 states and 206 transitions. [2024-09-13 04:22:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 04:22:17,306 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 10 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 77 [2024-09-13 04:22:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:22:17,307 INFO L225 Difference]: With dead ends: 174 [2024-09-13 04:22:17,307 INFO L226 Difference]: Without dead ends: 170 [2024-09-13 04:22:17,307 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=162, Invalid=1027, Unknown=1, NotChecked=0, Total=1190 [2024-09-13 04:22:17,308 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 73 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-13 04:22:17,308 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 222 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 660 Invalid, 1 Unknown, 0 Unchecked, 0.9s Time] [2024-09-13 04:22:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-13 04:22:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2024-09-13 04:22:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 109 states have internal predecessors, (118), 32 states have call successors, (32), 24 states have call predecessors, (32), 27 states have return successors, (43), 32 states have call predecessors, (43), 28 states have call successors, (43) [2024-09-13 04:22:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 193 transitions. [2024-09-13 04:22:17,377 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 193 transitions. Word has length 77 [2024-09-13 04:22:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:22:17,378 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 193 transitions. [2024-09-13 04:22:17,378 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 10 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-13 04:22:17,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 193 transitions. [2024-09-13 04:22:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-13 04:22:17,379 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:22:17,379 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:22:17,396 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-13 04:22:17,579 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 04:22:17,580 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:22:17,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1171390232, now seen corresponding path program 2 times [2024-09-13 04:22:17,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:22:17,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882919921] [2024-09-13 04:22:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:22:17,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:22:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:17,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:22:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:17,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:22:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:22:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:22:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 04:22:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 04:22:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:22:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:22:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 04:22:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 04:22:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:22:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:22:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 04:22:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 04:22:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:22:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:22:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 04:22:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-13 04:22:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:22:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:22:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:22:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 29 proven. 31 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-09-13 04:22:18,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:22:18,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882919921] [2024-09-13 04:22:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882919921] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:22:18,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238610023] [2024-09-13 04:22:18,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 04:22:18,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:22:18,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:22:18,330 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) [2024-09-13 04:22:18,331 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 04:22:18,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 04:22:18,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:22:18,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-13 04:22:18,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:22:18,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 04:22:18,826 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 36 treesize of output 13 [2024-09-13 04:22:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 28 proven. 38 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-09-13 04:22:18,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:22:19,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238610023] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:22:19,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 04:22:19,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2024-09-13 04:22:19,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42120299] [2024-09-13 04:22:19,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 04:22:19,537 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 04:22:19,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:22:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 04:22:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-09-13 04:22:19,538 INFO L87 Difference]: Start difference. First operand 166 states and 193 transitions. Second operand has 21 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) [2024-09-13 04:22:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:22:20,437 INFO L93 Difference]: Finished difference Result 171 states and 201 transitions. [2024-09-13 04:22:20,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 04:22:20,438 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) Word has length 124 [2024-09-13 04:22:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:22:20,439 INFO L225 Difference]: With dead ends: 171 [2024-09-13 04:22:20,439 INFO L226 Difference]: Without dead ends: 159 [2024-09-13 04:22:20,440 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2024-09-13 04:22:20,440 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 54 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 04:22:20,440 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 188 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 04:22:20,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-09-13 04:22:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2024-09-13 04:22:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 99 states have (on average 1.101010101010101) internal successors, (109), 101 states have internal predecessors, (109), 29 states have call successors, (29), 23 states have call predecessors, (29), 24 states have return successors, (37), 28 states have call predecessors, (37), 26 states have call successors, (37) [2024-09-13 04:22:20,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 175 transitions. [2024-09-13 04:22:20,506 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 175 transitions. Word has length 124 [2024-09-13 04:22:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:22:20,506 INFO L474 AbstractCegarLoop]: Abstraction has 153 states and 175 transitions. [2024-09-13 04:22:20,506 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) [2024-09-13 04:22:20,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 175 transitions. [2024-09-13 04:22:20,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-13 04:22:20,507 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:22:20,507 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:22:20,521 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-13 04:22:20,708 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 04:22:20,708 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:22:20,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1910667427, now seen corresponding path program 2 times [2024-09-13 04:22:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:22:20,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632523662] [2024-09-13 04:22:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:22:20,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:22:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:22:20,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437435352] [2024-09-13 04:22:20,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 04:22:20,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:22:20,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:22:20,744 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) [2024-09-13 04:22:20,745 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 04:22:20,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 04:22:20,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:22:20,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-09-13 04:22:20,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:22:20,937 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 [2024-09-13 04:22:20,941 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 [2024-09-13 04:22:20,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 04:22:20,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:22:20,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:22:20,962 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 [2024-09-13 04:22:21,812 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 [2024-09-13 04:22:21,821 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 [2024-09-13 04:22:22,360 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 [2024-09-13 04:22:22,374 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 [2024-09-13 04:22:22,463 INFO L349 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2024-09-13 04:22:22,463 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 40 treesize of output 51 [2024-09-13 04:22:22,513 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-09-13 04:22:22,513 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 [2024-09-13 04:22:22,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:22:22,758 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 92 treesize of output 136 [2024-09-13 04:22:22,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:22:22,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 160 [2024-09-13 04:22:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 72 proven. 48 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-09-13 04:22:22,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:22:31,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:22:31,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632523662] [2024-09-13 04:22:31,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:22:31,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437435352] [2024-09-13 04:22:31,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437435352] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:22:31,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:22:31,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-09-13 04:22:31,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331489924] [2024-09-13 04:22:31,244 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:22:31,244 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 04:22:31,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:22:31,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 04:22:31,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=723, Unknown=1, NotChecked=0, Total=812 [2024-09-13 04:22:31,245 INFO L87 Difference]: Start difference. First operand 153 states and 175 transitions. Second operand has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 10 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-13 04:22:32,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:22:32,895 INFO L93 Difference]: Finished difference Result 195 states and 231 transitions. [2024-09-13 04:22:32,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 04:22:32,895 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 10 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 101 [2024-09-13 04:22:32,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:22:32,897 INFO L225 Difference]: With dead ends: 195 [2024-09-13 04:22:32,897 INFO L226 Difference]: Without dead ends: 193 [2024-09-13 04:22:32,897 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 96 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=135, Invalid=1054, Unknown=1, NotChecked=0, Total=1190 [2024-09-13 04:22:32,898 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 60 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-13 04:22:32,898 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 293 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 874 Invalid, 1 Unknown, 0 Unchecked, 1.2s Time] [2024-09-13 04:22:32,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-09-13 04:22:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 155. [2024-09-13 04:22:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 100 states have (on average 1.1) internal successors, (110), 102 states have internal predecessors, (110), 29 states have call successors, (29), 23 states have call predecessors, (29), 25 states have return successors, (39), 29 states have call predecessors, (39), 26 states have call successors, (39) [2024-09-13 04:22:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 178 transitions. [2024-09-13 04:22:32,966 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 178 transitions. Word has length 101 [2024-09-13 04:22:32,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:22:32,966 INFO L474 AbstractCegarLoop]: Abstraction has 155 states and 178 transitions. [2024-09-13 04:22:32,967 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 10 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-13 04:22:32,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:32,967 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 178 transitions. [2024-09-13 04:22:32,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-09-13 04:22:32,967 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:22:32,967 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:22:32,981 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-13 04:22:33,168 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-13 04:22:33,168 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:22:33,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:33,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1396227582, now seen corresponding path program 3 times [2024-09-13 04:22:33,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:22:33,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974052801] [2024-09-13 04:22:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:22:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:22:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:22:33,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201626131] [2024-09-13 04:22:33,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 04:22:33,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:22:33,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:22:33,206 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 04:22:33,208 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-13 04:22:33,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 04:22:33,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:22:33,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 292 conjuncts are in the unsatisfiable core [2024-09-13 04:22:33,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:22:33,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 24 [2024-09-13 04:22:33,735 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 [2024-09-13 04:22:33,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 04:22:33,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:22:33,751 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 [2024-09-13 04:22:33,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-09-13 04:22:33,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:22:35,553 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 [2024-09-13 04:22:35,567 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 [2024-09-13 04:22:36,254 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 [2024-09-13 04:22:36,260 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 [2024-09-13 04:22:36,362 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-09-13 04:22:36,362 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 25 [2024-09-13 04:22:36,386 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-09-13 04:22:36,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 43 [2024-09-13 04:22:36,456 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 7 treesize of output 3 [2024-09-13 04:22:36,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:22:36,817 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 110 treesize of output 158 [2024-09-13 04:22:36,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:22:36,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 90 [2024-09-13 04:22:36,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:22:36,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 117 [2024-09-13 04:22:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-09-13 04:22:37,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:22:42,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:22:42,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974052801] [2024-09-13 04:22:42,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:22:42,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201626131] [2024-09-13 04:22:42,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201626131] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:22:42,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:22:42,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-09-13 04:22:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839557067] [2024-09-13 04:22:42,698 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:22:42,698 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-13 04:22:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:22:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-13 04:22:42,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 04:22:42,699 INFO L87 Difference]: Start difference. First operand 155 states and 178 transitions. Second operand has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2024-09-13 04:22:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:22:44,795 INFO L93 Difference]: Finished difference Result 197 states and 234 transitions. [2024-09-13 04:22:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 04:22:44,796 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 125 [2024-09-13 04:22:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:22:44,797 INFO L225 Difference]: With dead ends: 197 [2024-09-13 04:22:44,797 INFO L226 Difference]: Without dead ends: 195 [2024-09-13 04:22:44,798 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 04:22:44,798 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 50 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-13 04:22:44,798 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 412 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1015 Invalid, 1 Unknown, 0 Unchecked, 1.4s Time] [2024-09-13 04:22:44,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-13 04:22:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 157. [2024-09-13 04:22:44,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 101 states have (on average 1.099009900990099) internal successors, (111), 103 states have internal predecessors, (111), 29 states have call successors, (29), 23 states have call predecessors, (29), 26 states have return successors, (41), 30 states have call predecessors, (41), 26 states have call successors, (41) [2024-09-13 04:22:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 181 transitions. [2024-09-13 04:22:44,886 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 181 transitions. Word has length 125 [2024-09-13 04:22:44,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:22:44,886 INFO L474 AbstractCegarLoop]: Abstraction has 157 states and 181 transitions. [2024-09-13 04:22:44,886 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2024-09-13 04:22:44,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 181 transitions. [2024-09-13 04:22:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-09-13 04:22:44,887 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:22:44,887 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2024-09-13 04:22:44,897 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-13 04:22:45,088 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-13 04:22:45,088 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:22:45,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:22:45,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1715931769, now seen corresponding path program 4 times [2024-09-13 04:22:45,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:22:45,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929103507] [2024-09-13 04:22:45,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:22:45,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:22:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:22:45,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784852635] [2024-09-13 04:22:45,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 04:22:45,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:22:45,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:22:45,120 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 04:22:45,121 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-13 04:22:45,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 04:22:45,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:22:45,486 WARN L260 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 266 conjuncts are in the unsatisfiable core [2024-09-13 04:22:45,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:22:49,778 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_func_to_recursive_line_30_to_37_0_#in~r.offset_BEFORE_CALL_18| Int) (func_to_recursive_line_30_to_37_0_~A.base Int) (|v_func_to_recursive_line_30_to_37_0_#in~r.base_BEFORE_CALL_18| Int) (func_to_recursive_line_30_to_37_0_~A.offset Int)) (= (select (select |c_#memory_int#4| |v_func_to_recursive_line_30_to_37_0_#in~r.base_BEFORE_CALL_18|) |v_func_to_recursive_line_30_to_37_0_#in~r.offset_BEFORE_CALL_18|) (select (select |c_#memory_int#5| func_to_recursive_line_30_to_37_0_~A.base) func_to_recursive_line_30_to_37_0_~A.offset))) is different from true [2024-09-13 04:22:58,089 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 35 treesize of output 23 [2024-09-13 04:22:58,098 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 48 treesize of output 32 [2024-09-13 04:22:58,179 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 50 treesize of output 38 [2024-09-13 04:22:58,185 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 15 treesize of output 11 [2024-09-13 04:23:02,422 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((v_func_to_recursive_line_30_to_37_0_~A.base_159 Int) (|v_func_to_recursive_line_30_to_37_0_#in~r.offset_BEFORE_CALL_19| Int) (v_y_3 Int) (|v_func_to_recursive_line_30_to_37_0_#in~B.base_BEFORE_CALL_24| Int) (|v_func_to_recursive_line_30_to_37_0_#in~B.offset_BEFORE_CALL_24| Int) (v_func_to_recursive_line_30_to_37_0_~A.offset_159 Int) (|v_func_to_recursive_line_30_to_37_0_#in~r.base_BEFORE_CALL_19| Int)) (let ((.cse0 (select (select |c_#memory_int#4| |v_func_to_recursive_line_30_to_37_0_#in~r.base_BEFORE_CALL_19|) |v_func_to_recursive_line_30_to_37_0_#in~r.offset_BEFORE_CALL_19|))) (and (= (select (select |c_#memory_int#5| v_func_to_recursive_line_30_to_37_0_~A.base_159) v_func_to_recursive_line_30_to_37_0_~A.offset_159) .cse0) (<= (* v_y_3 (select (select |c_#memory_int#3| |v_func_to_recursive_line_30_to_37_0_#in~B.base_BEFORE_CALL_24|) |v_func_to_recursive_line_30_to_37_0_#in~B.offset_BEFORE_CALL_24|)) .cse0)))) (exists ((|v_func_to_recursive_line_30_to_37_0_#in~r.offset_BEFORE_CALL_18| Int) (func_to_recursive_line_30_to_37_0_~A.base Int) (|v_func_to_recursive_line_30_to_37_0_#in~r.base_BEFORE_CALL_18| Int) (func_to_recursive_line_30_to_37_0_~A.offset Int)) (= (select (select |c_#memory_int#4| |v_func_to_recursive_line_30_to_37_0_#in~r.base_BEFORE_CALL_18|) |v_func_to_recursive_line_30_to_37_0_#in~r.offset_BEFORE_CALL_18|) (select (select |c_#memory_int#5| func_to_recursive_line_30_to_37_0_~A.base) func_to_recursive_line_30_to_37_0_~A.offset)))) is different from true [2024-09-13 04:23:21,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:23:21,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 58 [2024-09-13 04:23:42,475 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 210 treesize of output 166 [2024-09-13 04:23:42,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 146 [2024-09-13 04:23:42,500 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 127 treesize of output 97 [2024-09-13 04:23:42,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 91 [2024-09-13 04:23:42,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 28 treesize of output 13 [2024-09-13 04:23:43,776 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-09-13 04:23:43,776 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 15 treesize of output 7 [2024-09-13 04:23:43,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:23:43,786 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 63 treesize of output 59 [2024-09-13 04:24:13,496 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 46 treesize of output 34 [2024-09-13 04:24:13,499 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 47 treesize of output 31 [2024-09-13 04:24:13,503 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 18 [2024-09-13 04:24:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 70 proven. 91 refuted. 1 times theorem prover too weak. 3 trivial. 13 not checked. [2024-09-13 04:24:21,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:26:34,497 WARN L293 SmtUtils]: Spent 31.12s on a formula simplification. DAG size of input: 549 DAG size of output: 549 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 04:27:22,876 WARN L293 SmtUtils]: Spent 16.24s on a formula simplification that was a NOOP. DAG size: 554 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 04:28:07,210 WARN L293 SmtUtils]: Spent 19.47s on a formula simplification that was a NOOP. DAG size: 560 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 04:28:47,957 WARN L293 SmtUtils]: Spent 19.08s on a formula simplification that was a NOOP. DAG size: 566 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 04:28:47,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:28:47,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929103507] [2024-09-13 04:28:47,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:28:47,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784852635] [2024-09-13 04:28:47,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784852635] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:28:47,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:28:47,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2024-09-13 04:28:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039499652] [2024-09-13 04:28:48,000 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:28:48,001 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-13 04:28:48,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:28:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-13 04:28:48,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=3268, Unknown=22, NotChecked=234, Total=3782 [2024-09-13 04:28:48,002 INFO L87 Difference]: Start difference. First operand 157 states and 181 transitions. Second operand has 44 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 34 states have internal predecessors, (55), 13 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2024-09-13 04:28:52,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:28:56,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:00,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:04,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:08,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:12,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:16,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:20,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:24,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:28,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:29:32,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:36,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:40,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:42,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:46,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:29:50,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:54,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:29:58,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:30:03,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:30:07,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:30:11,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:30:15,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:30:24,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:32:15,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:32:24,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:32:26,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:32:38,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:32:42,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:32:55,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:33:12,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:33:32,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:33:36,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:33:40,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:34:27,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:34:31,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:34:35,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:35:14,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:35:18,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] Killed by 15