./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/duplets.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 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/verifythis/duplets.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 ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:18:35,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:18:35,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:18:35,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:18:35,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:18:35,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:18:35,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:18:35,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:18:35,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:18:35,463 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:18:35,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:18:35,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:18:35,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:18:35,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:18:35,475 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:18:35,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:18:35,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:18:35,476 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:18:35,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:18:35,476 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:18:35,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:18:35,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:18:35,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:18:35,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:18:35,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:18:35,478 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:18:35,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:18:35,479 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:18:35,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:18:35,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:18:35,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:18:35,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:18:35,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:18:35,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:18:35,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:18:35,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:18:35,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:18:35,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:18:35,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:18:35,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:18:35,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:18:35,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:18:35,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:18:35,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:18:35,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:18:35,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:18:35,715 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:18:35,716 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:18:35,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/duplets.c [2024-09-24 23:18:37,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:18:37,279 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:18:37,280 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/duplets.c [2024-09-24 23:18:37,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/ce51f1c15/82257de06b9247978889c5e1f905fd7c/FLAGe741c3caf [2024-09-24 23:18:37,297 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/ce51f1c15/82257de06b9247978889c5e1f905fd7c [2024-09-24 23:18:37,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:18:37,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:18:37,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:18:37,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:18:37,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:18:37,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182aa769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37, skipping insertion in model container [2024-09-24 23:18:37,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,339 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:18:37,444 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/duplets.c[485,498] [2024-09-24 23:18:37,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:18:37,466 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:18:37,474 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/duplets.c[485,498] [2024-09-24 23:18:37,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:18:37,507 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:18:37,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37 WrapperNode [2024-09-24 23:18:37,507 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:18:37,508 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:18:37,508 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:18:37,508 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:18:37,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,531 INFO L138 Inliner]: procedures = 21, calls = 43, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:18:37,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:18:37,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:18:37,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:18:37,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:18:37,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,551 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,564 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 5, 5, 7]. 37 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 3]. [2024-09-24 23:18:37,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:18:37,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:18:37,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:18:37,580 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:18:37,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (1/1) ... [2024-09-24 23:18:37,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:18:37,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:18:37,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-24 23:18:37,623 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-24 23:18:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:18:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure finddup [2024-09-24 23:18:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure finddup [2024-09-24 23:18:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-24 23:18:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-24 23:18:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:18:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:18:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:18:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-24 23:18:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-24 23:18:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-24 23:18:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-24 23:18:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-24 23:18:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-24 23:18:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-24 23:18:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-24 23:18:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:18:37,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:18:37,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-24 23:18:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure mkdup [2024-09-24 23:18:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure mkdup [2024-09-24 23:18:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:18:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:18:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-24 23:18:37,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-24 23:18:37,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-24 23:18:37,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-24 23:18:37,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-09-24 23:18:37,669 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-09-24 23:18:37,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:18:37,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:18:37,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-24 23:18:37,756 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:18:37,757 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:18:37,938 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-09-24 23:18:37,938 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:18:37,958 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:18:37,958 INFO L317 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-24 23:18:37,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:18:37 BoogieIcfgContainer [2024-09-24 23:18:37,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:18:37,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:18:37,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:18:37,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:18:37,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:18:37" (1/3) ... [2024-09-24 23:18:37,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e002d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:18:37, skipping insertion in model container [2024-09-24 23:18:37,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:18:37" (2/3) ... [2024-09-24 23:18:37,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e002d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:18:37, skipping insertion in model container [2024-09-24 23:18:37,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:18:37" (3/3) ... [2024-09-24 23:18:37,965 INFO L112 eAbstractionObserver]: Analyzing ICFG duplets.c [2024-09-24 23:18:37,980 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:18:37,980 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:18:38,016 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:18:38,021 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;@1fc19762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:18:38,021 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:18:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:18:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-24 23:18:38,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:18:38,030 INFO L216 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1] [2024-09-24 23:18:38,030 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:18:38,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:38,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1311007902, now seen corresponding path program 1 times [2024-09-24 23:18:38,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:18:38,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675724887] [2024-09-24 23:18:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:18:38,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:18:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:18:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:18:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:18:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:18:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:18:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:18:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:18:38,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:18:38,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675724887] [2024-09-24 23:18:38,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675724887] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:18:38,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:18:38,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-24 23:18:38,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872971146] [2024-09-24 23:18:38,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:18:38,295 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-24 23:18:38,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:18:38,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-24 23:18:38,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-24 23:18:38,315 INFO L87 Difference]: Start difference. First operand has 54 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-24 23:18:38,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:18:38,592 INFO L93 Difference]: Finished difference Result 118 states and 170 transitions. [2024-09-24 23:18:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:18:38,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2024-09-24 23:18:38,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:18:38,601 INFO L225 Difference]: With dead ends: 118 [2024-09-24 23:18:38,601 INFO L226 Difference]: Without dead ends: 64 [2024-09-24 23:18:38,604 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:18:38,609 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 58 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:18:38,609 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 32 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:18:38,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-24 23:18:38,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2024-09-24 23:18:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:18:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-24 23:18:38,645 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 46 [2024-09-24 23:18:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:18:38,646 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-24 23:18:38,646 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-24 23:18:38,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-24 23:18:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-24 23:18:38,648 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:18:38,648 INFO L216 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1] [2024-09-24 23:18:38,648 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:18:38,648 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:18:38,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:38,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1692327078, now seen corresponding path program 1 times [2024-09-24 23:18:38,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:18:38,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203206271] [2024-09-24 23:18:38,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:18:38,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:18:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:18:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:18:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:18:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:18:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:18:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:18:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-24 23:18:38,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:18:38,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203206271] [2024-09-24 23:18:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203206271] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:18:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838497852] [2024-09-24 23:18:38,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:18:38,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:18:38,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:18:38,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:18:38,990 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:18:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:39,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-24 23:18:39,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:18:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-24 23:18:39,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:18:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-24 23:18:39,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838497852] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:18:39,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:18:39,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 17 [2024-09-24 23:18:39,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315249112] [2024-09-24 23:18:39,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:18:39,395 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-24 23:18:39,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:18:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-24 23:18:39,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-09-24 23:18:39,396 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 8 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-24 23:18:39,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:18:39,818 INFO L93 Difference]: Finished difference Result 99 states and 128 transitions. [2024-09-24 23:18:39,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:18:39,819 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 8 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 46 [2024-09-24 23:18:39,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:18:39,820 INFO L225 Difference]: With dead ends: 99 [2024-09-24 23:18:39,820 INFO L226 Difference]: Without dead ends: 78 [2024-09-24 23:18:39,821 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2024-09-24 23:18:39,822 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 94 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:18:39,822 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 396 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:18:39,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-24 23:18:39,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 51. [2024-09-24 23:18:39,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:18:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2024-09-24 23:18:39,830 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 46 [2024-09-24 23:18:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:18:39,830 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2024-09-24 23:18:39,831 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 8 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-24 23:18:39,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2024-09-24 23:18:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-24 23:18:39,832 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:18:39,832 INFO L216 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1] [2024-09-24 23:18:39,848 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-24 23:18:40,036 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:18:40,037 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:18:40,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:40,038 INFO L85 PathProgramCache]: Analyzing trace with hash -762329273, now seen corresponding path program 1 times [2024-09-24 23:18:40,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:18:40,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526787570] [2024-09-24 23:18:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:18:40,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:18:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:18:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:18:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:18:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:18:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:18:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:18:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:18:40,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:18:40,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526787570] [2024-09-24 23:18:40,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526787570] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:18:40,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:18:40,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-24 23:18:40,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77372302] [2024-09-24 23:18:40,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:18:40,212 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-24 23:18:40,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:18:40,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-24 23:18:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-09-24 23:18:40,214 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-24 23:18:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:18:40,466 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2024-09-24 23:18:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:18:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 47 [2024-09-24 23:18:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:18:40,467 INFO L225 Difference]: With dead ends: 71 [2024-09-24 23:18:40,468 INFO L226 Difference]: Without dead ends: 69 [2024-09-24 23:18:40,468 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:18:40,468 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 74 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:18:40,469 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 185 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:18:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-24 23:18:40,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2024-09-24 23:18:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-09-24 23:18:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2024-09-24 23:18:40,479 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 47 [2024-09-24 23:18:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:18:40,479 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2024-09-24 23:18:40,479 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-24 23:18:40,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2024-09-24 23:18:40,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-24 23:18:40,481 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:18:40,481 INFO L216 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:18:40,481 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-24 23:18:40,481 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:18:40,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:40,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1192301050, now seen corresponding path program 1 times [2024-09-24 23:18:40,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:18:40,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032585809] [2024-09-24 23:18:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:18:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:18:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:18:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:18:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:18:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:18:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:18:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:18:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-24 23:18:40,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:18:40,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032585809] [2024-09-24 23:18:40,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032585809] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:18:40,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12133121] [2024-09-24 23:18:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:18:40,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:18:40,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:18:40,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:18:41,000 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:18:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:41,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-24 23:18:41,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:18:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-24 23:18:41,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:18:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-24 23:18:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12133121] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-24 23:18:41,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:18:41,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16, 12] total 27 [2024-09-24 23:18:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061912457] [2024-09-24 23:18:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:18:41,655 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-24 23:18:41,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:18:41,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-24 23:18:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2024-09-24 23:18:41,656 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-24 23:18:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:18:41,786 INFO L93 Difference]: Finished difference Result 101 states and 125 transitions. [2024-09-24 23:18:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:18:41,787 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 49 [2024-09-24 23:18:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:18:41,789 INFO L225 Difference]: With dead ends: 101 [2024-09-24 23:18:41,789 INFO L226 Difference]: Without dead ends: 68 [2024-09-24 23:18:41,789 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2024-09-24 23:18:41,790 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 18 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:18:41,791 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 406 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:18:41,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-24 23:18:41,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2024-09-24 23:18:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-09-24 23:18:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2024-09-24 23:18:41,806 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 49 [2024-09-24 23:18:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:18:41,807 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2024-09-24 23:18:41,807 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-24 23:18:41,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2024-09-24 23:18:41,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-24 23:18:41,810 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:18:41,810 INFO L216 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:18:41,823 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-24 23:18:42,010 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:18:42,011 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:18:42,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1656998341, now seen corresponding path program 1 times [2024-09-24 23:18:42,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:18:42,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017668415] [2024-09-24 23:18:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:18:42,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:18:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:18:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:18:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:18:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:18:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:18:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:18:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:18:42,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:18:42,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017668415] [2024-09-24 23:18:42,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017668415] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:18:42,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864558816] [2024-09-24 23:18:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:18:42,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:18:42,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:18:42,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:18:42,132 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:18:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-24 23:18:42,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:18:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:18:42,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:18:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:18:42,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864558816] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:18:42,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:18:42,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 7 [2024-09-24 23:18:42,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108465780] [2024-09-24 23:18:42,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:18:42,264 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-24 23:18:42,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:18:42,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-24 23:18:42,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:18:42,265 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-24 23:18:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:18:42,437 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2024-09-24 23:18:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:18:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 51 [2024-09-24 23:18:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:18:42,438 INFO L225 Difference]: With dead ends: 94 [2024-09-24 23:18:42,439 INFO L226 Difference]: Without dead ends: 73 [2024-09-24 23:18:42,439 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-09-24 23:18:42,441 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 62 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:18:42,441 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 118 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:18:42,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-24 23:18:42,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2024-09-24 23:18:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-09-24 23:18:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2024-09-24 23:18:42,454 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 51 [2024-09-24 23:18:42,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:18:42,455 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2024-09-24 23:18:42,455 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-24 23:18:42,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2024-09-24 23:18:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-24 23:18:42,457 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:18:42,458 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:18:42,470 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-24 23:18:42,658 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:18:42,659 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:18:42,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 106146672, now seen corresponding path program 1 times [2024-09-24 23:18:42,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:18:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540228496] [2024-09-24 23:18:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:18:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:18:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:18:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:18:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:18:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:18:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:18:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:18:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:18:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:18:42,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:18:42,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540228496] [2024-09-24 23:18:42,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540228496] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:18:42,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:18:42,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-09-24 23:18:42,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847291503] [2024-09-24 23:18:42,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:18:42,993 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-24 23:18:42,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:18:42,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-24 23:18:42,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:18:42,994 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-24 23:18:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:18:43,416 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2024-09-24 23:18:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-24 23:18:43,416 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2024-09-24 23:18:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:18:43,417 INFO L225 Difference]: With dead ends: 107 [2024-09-24 23:18:43,418 INFO L226 Difference]: Without dead ends: 93 [2024-09-24 23:18:43,418 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-09-24 23:18:43,419 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 86 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:18:43,419 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 204 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:18:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-24 23:18:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 76. [2024-09-24 23:18:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 48 states have (on average 1.1875) internal successors, (57), 51 states have internal predecessors, (57), 17 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-09-24 23:18:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2024-09-24 23:18:43,434 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 54 [2024-09-24 23:18:43,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:18:43,434 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2024-09-24 23:18:43,434 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-24 23:18:43,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:43,435 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2024-09-24 23:18:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-24 23:18:43,435 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:18:43,435 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-09-24 23:18:43,436 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-24 23:18:43,436 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:18:43,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:18:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash -265637807, now seen corresponding path program 2 times [2024-09-24 23:18:43,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:18:43,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494983989] [2024-09-24 23:18:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:18:43,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:18:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:43,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:18:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:43,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:18:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:43,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:43,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:18:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:44,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:18:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:44,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:18:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:44,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:18:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:44,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:18:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:18:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-24 23:18:44,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:18:44,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494983989] [2024-09-24 23:18:44,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494983989] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:18:44,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954081244] [2024-09-24 23:18:44,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:18:44,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:18:44,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:18:44,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:18:44,642 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:18:44,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:18:44,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:18:44,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-24 23:18:44,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:18:44,868 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-09-24 23:18:44,869 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 1 case distinctions, treesize of input 38 treesize of output 19 [2024-09-24 23:18:50,676 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_mkdup_~i~0_30 Int) (v_mkdup_~j~0_34 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (and (let ((.cse0 (select |c_#memory_int#3| v_main_~a~0.base_BEFORE_CALL_1))) (= (select .cse0 (+ (* v_mkdup_~j~0_34 4) v_main_~a~0.offset_BEFORE_CALL_1)) (select .cse0 (+ (* v_mkdup_~i~0_30 4) v_main_~a~0.offset_BEFORE_CALL_1)))) (not (= v_mkdup_~i~0_30 v_mkdup_~j~0_34)) (<= 0 v_mkdup_~i~0_30) (<= 0 v_mkdup_~j~0_34))) is different from true [2024-09-24 23:19:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-24 23:19:11,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:19:11,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954081244] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:19:11,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:19:11,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 34 [2024-09-24 23:19:11,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65476921] [2024-09-24 23:19:11,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:19:11,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-24 23:19:11,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:19:11,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-24 23:19:11,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1036, Unknown=6, NotChecked=64, Total=1190 [2024-09-24 23:19:11,490 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 34 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 12 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-24 23:19:16,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-24 23:19:23,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-24 23:19:27,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-24 23:19:33,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-24 23:19:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:19:33,388 INFO L93 Difference]: Finished difference Result 152 states and 195 transitions. [2024-09-24 23:19:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-24 23:19:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 12 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 54 [2024-09-24 23:19:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:19:33,390 INFO L225 Difference]: With dead ends: 152 [2024-09-24 23:19:33,390 INFO L226 Difference]: Without dead ends: 111 [2024-09-24 23:19:33,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=360, Invalid=3412, Unknown=14, NotChecked=120, Total=3906 [2024-09-24 23:19:33,392 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 212 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 64 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:19:33,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 605 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1615 Invalid, 5 Unknown, 134 Unchecked, 18.1s Time] [2024-09-24 23:19:33,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-24 23:19:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2024-09-24 23:19:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 55 states have internal predecessors, (62), 17 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2024-09-24 23:19:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 96 transitions. [2024-09-24 23:19:33,419 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 96 transitions. Word has length 54 [2024-09-24 23:19:33,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:19:33,420 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 96 transitions. [2024-09-24 23:19:33,420 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 12 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-24 23:19:33,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 96 transitions. [2024-09-24 23:19:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-24 23:19:33,421 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:19:33,421 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:19:33,434 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:19:33,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:19:33,626 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:19:33,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1209816935, now seen corresponding path program 1 times [2024-09-24 23:19:33,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:19:33,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781446630] [2024-09-24 23:19:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:19:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:19:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:19:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:19:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:19:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:19:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:19:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:19:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:19:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-24 23:19:33,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:19:33,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781446630] [2024-09-24 23:19:33,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781446630] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:19:33,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:19:33,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-09-24 23:19:33,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949300712] [2024-09-24 23:19:33,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:19:33,929 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-24 23:19:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:19:33,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-24 23:19:33,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:19:33,929 INFO L87 Difference]: Start difference. First operand 80 states and 96 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-24 23:19:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:19:34,314 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2024-09-24 23:19:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-24 23:19:34,315 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 61 [2024-09-24 23:19:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:19:34,317 INFO L225 Difference]: With dead ends: 100 [2024-09-24 23:19:34,317 INFO L226 Difference]: Without dead ends: 98 [2024-09-24 23:19:34,317 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-09-24 23:19:34,318 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 67 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:19:34,318 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 209 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:19:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-24 23:19:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2024-09-24 23:19:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 62 states have internal predecessors, (71), 19 states have call successors, (19), 10 states have call predecessors, (19), 11 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-09-24 23:19:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2024-09-24 23:19:34,364 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 61 [2024-09-24 23:19:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:19:34,364 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2024-09-24 23:19:34,364 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-24 23:19:34,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2024-09-24 23:19:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-24 23:19:34,365 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:19:34,365 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:19:34,366 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-24 23:19:34,366 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:19:34,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:34,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1211663977, now seen corresponding path program 1 times [2024-09-24 23:19:34,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:19:34,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19918818] [2024-09-24 23:19:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:34,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:19:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:19:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:19:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:19:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:19:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:19:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:19:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-24 23:19:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:19:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-24 23:19:34,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:19:34,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19918818] [2024-09-24 23:19:34,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19918818] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:19:34,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:19:34,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-24 23:19:34,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116986468] [2024-09-24 23:19:34,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:19:34,537 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-24 23:19:34,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:19:34,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-24 23:19:34,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-09-24 23:19:34,539 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-24 23:19:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:19:34,809 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2024-09-24 23:19:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:19:34,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 61 [2024-09-24 23:19:34,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:19:34,810 INFO L225 Difference]: With dead ends: 105 [2024-09-24 23:19:34,810 INFO L226 Difference]: Without dead ends: 94 [2024-09-24 23:19:34,810 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-09-24 23:19:34,811 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 65 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:19:34,811 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 140 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:19:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-24 23:19:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2024-09-24 23:19:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 62 states have internal predecessors, (70), 19 states have call successors, (19), 10 states have call predecessors, (19), 11 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-09-24 23:19:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2024-09-24 23:19:34,829 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 61 [2024-09-24 23:19:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:19:34,829 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2024-09-24 23:19:34,829 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-24 23:19:34,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2024-09-24 23:19:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-24 23:19:34,832 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:19:34,833 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1] [2024-09-24 23:19:34,833 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-24 23:19:34,833 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:19:34,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash -22267472, now seen corresponding path program 3 times [2024-09-24 23:19:34,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:19:34,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149573894] [2024-09-24 23:19:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:34,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:19:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:19:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:19:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:19:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:19:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:19:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:19:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-24 23:19:34,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:19:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149573894] [2024-09-24 23:19:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149573894] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:19:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263424391] [2024-09-24 23:19:34,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:19:34,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:19:34,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:19:34,947 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:19:34,949 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-24 23:19:35,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-24 23:19:35,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:19:35,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-24 23:19:35,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:19:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-09-24 23:19:35,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:19:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263424391] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:19:35,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:19:35,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-09-24 23:19:35,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534930113] [2024-09-24 23:19:35,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:19:35,056 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:19:35,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:19:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:19:35,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-09-24 23:19:35,057 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-24 23:19:35,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:19:35,099 INFO L93 Difference]: Finished difference Result 140 states and 171 transitions. [2024-09-24 23:19:35,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:19:35,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 59 [2024-09-24 23:19:35,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:19:35,100 INFO L225 Difference]: With dead ends: 140 [2024-09-24 23:19:35,100 INFO L226 Difference]: Without dead ends: 92 [2024-09-24 23:19:35,101 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-09-24 23:19:35,101 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 1 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:19:35,101 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 204 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:19:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-24 23:19:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2024-09-24 23:19:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 63 states have internal predecessors, (70), 19 states have call successors, (19), 10 states have call predecessors, (19), 11 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-09-24 23:19:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2024-09-24 23:19:35,138 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 59 [2024-09-24 23:19:35,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:19:35,138 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2024-09-24 23:19:35,138 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-24 23:19:35,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:35,138 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2024-09-24 23:19:35,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-24 23:19:35,139 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:19:35,139 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:19:35,151 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-24 23:19:35,339 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-24 23:19:35,340 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:19:35,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:35,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1976101370, now seen corresponding path program 1 times [2024-09-24 23:19:35,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:19:35,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93159227] [2024-09-24 23:19:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:35,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:19:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:19:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:19:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:19:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:19:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:19:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:19:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:19:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:19:35,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:19:35,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93159227] [2024-09-24 23:19:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93159227] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:19:35,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247152166] [2024-09-24 23:19:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:35,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:19:35,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:19:35,777 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:19:35,781 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-24 23:19:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:35,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-24 23:19:35,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:19:36,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-24 23:19:36,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-09-24 23:19:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-24 23:19:36,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:19:36,223 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 28 treesize of output 24 [2024-09-24 23:19:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-24 23:19:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247152166] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:19:36,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:19:36,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 23 [2024-09-24 23:19:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545339098] [2024-09-24 23:19:36,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:19:36,345 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-24 23:19:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:19:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-24 23:19:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-09-24 23:19:36,346 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 19 states have internal predecessors, (52), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-24 23:19:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:19:36,992 INFO L93 Difference]: Finished difference Result 129 states and 156 transitions. [2024-09-24 23:19:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-24 23:19:36,992 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 19 states have internal predecessors, (52), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 61 [2024-09-24 23:19:36,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:19:36,993 INFO L225 Difference]: With dead ends: 129 [2024-09-24 23:19:36,993 INFO L226 Difference]: Without dead ends: 106 [2024-09-24 23:19:36,994 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 128 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2024-09-24 23:19:36,994 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 87 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-24 23:19:36,994 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 269 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-24 23:19:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-09-24 23:19:37,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 93. [2024-09-24 23:19:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 65 states have internal predecessors, (74), 19 states have call successors, (19), 10 states have call predecessors, (19), 11 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2024-09-24 23:19:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions. [2024-09-24 23:19:37,010 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 61 [2024-09-24 23:19:37,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:19:37,011 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions. [2024-09-24 23:19:37,011 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 19 states have internal predecessors, (52), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-24 23:19:37,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:37,011 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions. [2024-09-24 23:19:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-24 23:19:37,015 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:19:37,015 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:19:37,028 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-24 23:19:37,216 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-24 23:19:37,216 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:19:37,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:37,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1977948412, now seen corresponding path program 1 times [2024-09-24 23:19:37,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:19:37,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201162016] [2024-09-24 23:19:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:37,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:19:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:37,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:19:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:37,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:19:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:37,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:37,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:19:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:37,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:19:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:37,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:19:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:37,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:37,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:19:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:37,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:19:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-24 23:19:37,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:19:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201162016] [2024-09-24 23:19:37,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201162016] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:19:37,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:19:37,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-24 23:19:37,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830212419] [2024-09-24 23:19:37,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:19:37,358 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-24 23:19:37,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:19:37,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-24 23:19:37,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-24 23:19:37,359 INFO L87 Difference]: Start difference. First operand 93 states and 112 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-24 23:19:37,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:19:37,692 INFO L93 Difference]: Finished difference Result 122 states and 145 transitions. [2024-09-24 23:19:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-24 23:19:37,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2024-09-24 23:19:37,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:19:37,693 INFO L225 Difference]: With dead ends: 122 [2024-09-24 23:19:37,693 INFO L226 Difference]: Without dead ends: 104 [2024-09-24 23:19:37,693 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-09-24 23:19:37,694 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 63 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:19:37,694 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 199 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:19:37,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-24 23:19:37,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2024-09-24 23:19:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 58 states have internal predecessors, (65), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-09-24 23:19:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2024-09-24 23:19:37,712 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 61 [2024-09-24 23:19:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:19:37,712 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2024-09-24 23:19:37,712 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-24 23:19:37,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2024-09-24 23:19:37,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-24 23:19:37,714 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:19:37,714 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:19:37,714 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-24 23:19:37,714 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:19:37,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:37,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1604316891, now seen corresponding path program 4 times [2024-09-24 23:19:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:19:37,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441529356] [2024-09-24 23:19:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:37,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:19:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:38,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:19:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:38,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:19:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:38,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:38,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:19:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:38,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-24 23:19:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:38,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-24 23:19:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:38,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:19:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:38,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:19:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:40,480 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-24 23:19:40,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:19:40,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441529356] [2024-09-24 23:19:40,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441529356] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:19:40,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325558028] [2024-09-24 23:19:40,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:19:40,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:19:40,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:19:40,483 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) [2024-09-24 23:19:40,483 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-24 23:19:40,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:19:40,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:19:40,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-24 23:19:40,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:19:40,595 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 7 treesize of output 6 [2024-09-24 23:19:40,683 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_mkdup_~a.offset_22 Int) (v_mkdup_~j~0_39 Int) (v_mkdup_~i~0_35 Int)) (= |c_#memory_int#3| (store |c_old(#memory_int#3)| |c_mkdup_#in~a.base| (let ((.cse1 (+ (* v_mkdup_~j~0_39 4) v_mkdup_~a.offset_22))) (let ((.cse0 (select (select |c_#memory_int#3| |c_mkdup_#in~a.base|) .cse1))) (store (store (select |c_old(#memory_int#3)| |c_mkdup_#in~a.base|) (+ v_mkdup_~a.offset_22 (* v_mkdup_~i~0_35 4)) .cse0) .cse1 .cse0)))))) is different from true [2024-09-24 23:19:40,697 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 40 [2024-09-24 23:19:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-24 23:19:44,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:19:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325558028] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:19:44,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:19:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 37 [2024-09-24 23:19:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058007708] [2024-09-24 23:19:44,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:19:44,995 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-24 23:19:44,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:19:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-24 23:19:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2036, Unknown=1, NotChecked=92, Total=2352 [2024-09-24 23:19:44,996 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 37 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 32 states have internal predecessors, (55), 8 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-24 23:19:49,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-24 23:19:53,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-24 23:19:58,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-24 23:20:02,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-24 23:20:40,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]