./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/lcp.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/verifythis/lcp.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 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 08:59:23,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 08:59:23,273 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 08:59:23,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 08:59:23,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 08:59:23,301 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 08:59:23,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 08:59:23,303 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 08:59:23,303 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 08:59:23,305 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 08:59:23,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 08:59:23,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 08:59:23,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 08:59:23,306 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 08:59:23,306 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 08:59:23,306 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 08:59:23,306 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 08:59:23,307 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 08:59:23,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 08:59:23,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 08:59:23,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 08:59:23,310 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 08:59:23,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 08:59:23,311 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 08:59:23,311 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 08:59:23,312 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 08:59:23,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 08:59:23,312 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 08:59:23,312 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 08:59:23,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 08:59:23,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 08:59:23,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 08:59:23,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 08:59:23,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 08:59:23,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 08:59:23,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 08:59:23,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 08:59:23,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 08:59:23,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 08:59:23,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 08:59:23,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 08:59:23,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 08:59:23,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 08:59:23,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 08:59:23,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 08:59:23,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 08:59:23,527 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 08:59:23,527 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 08:59:23,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/lcp.c [2024-09-13 08:59:24,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 08:59:25,022 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 08:59:25,022 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/lcp.c [2024-09-13 08:59:25,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/1b10675ff/475c2dc9d8244eaa99cd16d0f707da76/FLAG43db85dff [2024-09-13 08:59:25,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/1b10675ff/475c2dc9d8244eaa99cd16d0f707da76 [2024-09-13 08:59:25,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 08:59:25,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 08:59:25,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 08:59:25,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 08:59:25,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 08:59:25,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac5287e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25, skipping insertion in model container [2024-09-13 08:59:25,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 08:59:25,194 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/lcp.c[515,528] [2024-09-13 08:59:25,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 08:59:25,234 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 08:59:25,263 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/lcp.c[515,528] [2024-09-13 08:59:25,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 08:59:25,293 INFO L204 MainTranslator]: Completed translation [2024-09-13 08:59:25,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25 WrapperNode [2024-09-13 08:59:25,294 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 08:59:25,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 08:59:25,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 08:59:25,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 08:59:25,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,331 INFO L138 Inliner]: procedures = 20, calls = 29, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 08:59:25,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 08:59:25,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 08:59:25,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 08:59:25,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 08:59:25,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,343 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,368 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 6, 7]. 47 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-09-13 08:59:25,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,384 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 08:59:25,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 08:59:25,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 08:59:25,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 08:59:25,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (1/1) ... [2024-09-13 08:59:25,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 08:59:25,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 08:59:25,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 08:59:25,431 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 08:59:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 08:59:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 08:59:25,473 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 08:59:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 08:59:25,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 08:59:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 08:59:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 08:59:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-13 08:59:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-09-13 08:59:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-09-13 08:59:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 08:59:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 08:59:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-13 08:59:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure lcp [2024-09-13 08:59:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure lcp [2024-09-13 08:59:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 08:59:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 08:59:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-13 08:59:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-13 08:59:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-13 08:59:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-09-13 08:59:25,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-09-13 08:59:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 08:59:25,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 08:59:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 08:59:25,557 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 08:59:25,559 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 08:59:25,685 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-09-13 08:59:25,686 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 08:59:25,703 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 08:59:25,703 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 08:59:25,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 08:59:25 BoogieIcfgContainer [2024-09-13 08:59:25,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 08:59:25,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 08:59:25,705 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 08:59:25,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 08:59:25,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 08:59:25" (1/3) ... [2024-09-13 08:59:25,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2e0e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 08:59:25, skipping insertion in model container [2024-09-13 08:59:25,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:25" (2/3) ... [2024-09-13 08:59:25,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2e0e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 08:59:25, skipping insertion in model container [2024-09-13 08:59:25,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 08:59:25" (3/3) ... [2024-09-13 08:59:25,710 INFO L112 eAbstractionObserver]: Analyzing ICFG lcp.c [2024-09-13 08:59:25,733 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 08:59:25,734 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 08:59:25,783 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 08:59:25,788 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;@3cec9a16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 08:59:25,788 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 08:59:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 08:59:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-13 08:59:25,798 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 08:59:25,799 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-13 08:59:25,800 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 08:59:25,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash 384185568, now seen corresponding path program 1 times [2024-09-13 08:59:25,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 08:59:25,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725413977] [2024-09-13 08:59:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 08:59:25,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 08:59:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:25,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 08:59:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:25,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 08:59:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:25,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 08:59:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:25,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 08:59:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:25,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 08:59:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:25,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 08:59:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 08:59:25,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 08:59:25,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725413977] [2024-09-13 08:59:25,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725413977] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 08:59:25,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 08:59:25,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 08:59:25,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402396862] [2024-09-13 08:59:25,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 08:59:25,996 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 08:59:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 08:59:26,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 08:59:26,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 08:59:26,012 INFO L87 Difference]: Start difference. First operand has 44 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 08:59:26,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 08:59:26,123 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2024-09-13 08:59:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 08:59:26,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2024-09-13 08:59:26,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 08:59:26,146 INFO L225 Difference]: With dead ends: 82 [2024-09-13 08:59:26,147 INFO L226 Difference]: Without dead ends: 38 [2024-09-13 08:59:26,150 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 08:59:26,155 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 08:59:26,156 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 22 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 08:59:26,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-13 08:59:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-13 08:59:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 08:59:26,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-09-13 08:59:26,213 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 38 [2024-09-13 08:59:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 08:59:26,219 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-09-13 08:59:26,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 08:59:26,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:26,220 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-09-13 08:59:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 08:59:26,221 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 08:59:26,221 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-13 08:59:26,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 08:59:26,221 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 08:59:26,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash 96317513, now seen corresponding path program 1 times [2024-09-13 08:59:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 08:59:26,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950614750] [2024-09-13 08:59:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 08:59:26,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 08:59:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:26,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 08:59:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:26,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 08:59:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:26,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 08:59:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:26,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 08:59:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:26,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 08:59:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:26,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 08:59:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 08:59:26,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 08:59:26,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950614750] [2024-09-13 08:59:26,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950614750] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 08:59:26,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 08:59:26,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-13 08:59:26,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142951443] [2024-09-13 08:59:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 08:59:26,714 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 08:59:26,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 08:59:26,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 08:59:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-13 08:59:26,716 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-13 08:59:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 08:59:26,928 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-09-13 08:59:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 08:59:26,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2024-09-13 08:59:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 08:59:26,930 INFO L225 Difference]: With dead ends: 60 [2024-09-13 08:59:26,930 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 08:59:26,930 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-13 08:59:26,931 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 08:59:26,932 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 44 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 08:59:26,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 08:59:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-13 08:59:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 08:59:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-13 08:59:26,938 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 40 [2024-09-13 08:59:26,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 08:59:26,941 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-13 08:59:26,942 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-13 08:59:26,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-13 08:59:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 08:59:26,943 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 08:59:26,943 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-13 08:59:26,944 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 08:59:26,944 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 08:59:26,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1492030389, now seen corresponding path program 1 times [2024-09-13 08:59:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 08:59:26,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413467991] [2024-09-13 08:59:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 08:59:26,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 08:59:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 08:59:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 08:59:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 08:59:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 08:59:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 08:59:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 08:59:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 08:59:27,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 08:59:27,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413467991] [2024-09-13 08:59:27,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413467991] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 08:59:27,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 08:59:27,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-09-13 08:59:27,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41499620] [2024-09-13 08:59:27,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 08:59:27,183 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 08:59:27,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 08:59:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 08:59:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-09-13 08:59:27,184 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-13 08:59:27,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 08:59:27,383 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2024-09-13 08:59:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 08:59:27,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2024-09-13 08:59:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 08:59:27,384 INFO L225 Difference]: With dead ends: 45 [2024-09-13 08:59:27,384 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 08:59:27,385 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-09-13 08:59:27,385 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 08:59:27,386 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 65 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 08:59:27,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 08:59:27,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-13 08:59:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 10 states have call successors, (10), 8 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 08:59:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-09-13 08:59:27,400 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 40 [2024-09-13 08:59:27,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 08:59:27,400 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-09-13 08:59:27,400 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-13 08:59:27,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:27,401 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-09-13 08:59:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-13 08:59:27,401 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 08:59:27,401 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-09-13 08:59:27,402 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 08:59:27,402 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 08:59:27,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1098010380, now seen corresponding path program 1 times [2024-09-13 08:59:27,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 08:59:27,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487014654] [2024-09-13 08:59:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 08:59:27,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 08:59:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 08:59:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 08:59:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 08:59:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 08:59:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 08:59:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-13 08:59:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 08:59:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 08:59:27,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 08:59:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487014654] [2024-09-13 08:59:27,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487014654] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 08:59:27,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 08:59:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-09-13 08:59:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595709601] [2024-09-13 08:59:27,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 08:59:27,823 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 08:59:27,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 08:59:27,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 08:59:27,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-09-13 08:59:27,825 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 08:59:28,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 08:59:28,171 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2024-09-13 08:59:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 08:59:28,172 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2024-09-13 08:59:28,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 08:59:28,174 INFO L225 Difference]: With dead ends: 60 [2024-09-13 08:59:28,175 INFO L226 Difference]: Without dead ends: 45 [2024-09-13 08:59:28,175 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-09-13 08:59:28,176 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 08:59:28,177 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 81 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 08:59:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-13 08:59:28,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-09-13 08:59:28,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 10 states have call successors, (10), 8 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 08:59:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-09-13 08:59:28,188 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 47 [2024-09-13 08:59:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 08:59:28,188 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-09-13 08:59:28,188 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 08:59:28,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-09-13 08:59:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 08:59:28,190 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 08:59:28,190 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-09-13 08:59:28,191 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 08:59:28,191 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 08:59:28,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash 270624175, now seen corresponding path program 1 times [2024-09-13 08:59:28,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 08:59:28,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965063424] [2024-09-13 08:59:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 08:59:28,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 08:59:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:28,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 08:59:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:28,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 08:59:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:28,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 08:59:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:28,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-13 08:59:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:28,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 08:59:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:28,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 08:59:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:28,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-13 08:59:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 08:59:28,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 08:59:28,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965063424] [2024-09-13 08:59:28,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965063424] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 08:59:28,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676889269] [2024-09-13 08:59:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 08:59:28,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 08:59:28,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 08:59:28,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 08:59:28,494 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 08:59:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:28,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 08:59:28,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 08:59:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 08:59:28,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 08:59:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 08:59:29,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676889269] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 08:59:29,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 08:59:29,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 13 [2024-09-13 08:59:29,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187450221] [2024-09-13 08:59:29,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 08:59:29,136 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 08:59:29,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 08:59:29,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 08:59:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-09-13 08:59:29,137 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 08:59:29,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 08:59:29,371 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-09-13 08:59:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 08:59:29,371 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2024-09-13 08:59:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 08:59:29,372 INFO L225 Difference]: With dead ends: 46 [2024-09-13 08:59:29,372 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 08:59:29,373 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-09-13 08:59:29,374 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 08:59:29,375 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 91 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 08:59:29,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 08:59:29,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 08:59:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 08:59:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 08:59:29,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2024-09-13 08:59:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 08:59:29,376 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 08:59:29,377 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 08:59:29,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 08:59:29,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 08:59:29,379 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 08:59:29,399 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 08:59:29,582 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 08:59:29,586 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-13 08:59:29,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 08:59:30,165 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 08:59:30,178 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:126) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:109) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.BacktranslationService.translateExpressionToString(BacktranslationService.java:92) at de.uni_freiburg.informatik.ultimate.core.lib.results.ProcedureContractResult.translateTerm(ProcedureContractResult.java:69) at de.uni_freiburg.informatik.ultimate.core.lib.results.ProcedureContractResult.(ProcedureContractResult.java:60) at de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.FloydHoareUtils.createProcedureContractResults(FloydHoareUtils.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-09-13 08:59:30,184 INFO L158 Benchmark]: Toolchain (without parser) took 5139.30ms. Allocated memory was 163.6MB in the beginning and 234.9MB in the end (delta: 71.3MB). Free memory was 89.9MB in the beginning and 88.3MB in the end (delta: 1.6MB). Peak memory consumption was 74.3MB. Max. memory is 16.1GB. [2024-09-13 08:59:30,184 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 163.6MB. Free memory was 119.7MB in the beginning and 119.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 08:59:30,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.13ms. Allocated memory is still 163.6MB. Free memory was 89.7MB in the beginning and 132.8MB in the end (delta: -43.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2024-09-13 08:59:30,184 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.63ms. Allocated memory is still 163.6MB. Free memory was 132.7MB in the beginning and 135.5MB in the end (delta: -2.7MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-09-13 08:59:30,185 INFO L158 Benchmark]: Boogie Preprocessor took 54.63ms. Allocated memory is still 163.6MB. Free memory was 135.5MB in the beginning and 133.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 08:59:30,185 INFO L158 Benchmark]: RCFGBuilder took 316.34ms. Allocated memory is still 163.6MB. Free memory was 132.4MB in the beginning and 115.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-13 08:59:30,185 INFO L158 Benchmark]: TraceAbstraction took 4478.08ms. Allocated memory was 163.6MB in the beginning and 234.9MB in the end (delta: 71.3MB). Free memory was 115.6MB in the beginning and 88.3MB in the end (delta: 27.3MB). Peak memory consumption was 99.7MB. Max. memory is 16.1GB. [2024-09-13 08:59:30,186 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 163.6MB. Free memory was 119.7MB in the beginning and 119.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.13ms. Allocated memory is still 163.6MB. Free memory was 89.7MB in the beginning and 132.8MB in the end (delta: -43.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.63ms. Allocated memory is still 163.6MB. Free memory was 132.7MB in the beginning and 135.5MB in the end (delta: -2.7MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.63ms. Allocated memory is still 163.6MB. Free memory was 135.5MB in the beginning and 133.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.34ms. Allocated memory is still 163.6MB. Free memory was 132.4MB in the beginning and 115.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4478.08ms. Allocated memory was 163.6MB in the beginning and 234.9MB in the end (delta: 71.3MB). Free memory was 115.6MB in the beginning and 88.3MB in the end (delta: 27.3MB). Peak memory consumption was 99.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 178 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 165 mSDsluCounter, 303 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1141 IncrementalHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 66 mSDtfsCounter, 1141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 265 NumberOfCodeBlocks, 265 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 308 ConstructedInterpolants, 0 QuantifiedInterpolants, 1285 SizeOfPredicates, 12 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 95/101 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (((\old(x) == x) && (\old(y) == y)) && (\old(n) == n)) - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-13 08:59:30,210 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/verifythis/lcp.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.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 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 08:59:32,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 08:59:32,363 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-13 08:59:32,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 08:59:32,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 08:59:32,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 08:59:32,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 08:59:32,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 08:59:32,381 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 08:59:32,382 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 08:59:32,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 08:59:32,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 08:59:32,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 08:59:32,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 08:59:32,383 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 08:59:32,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 08:59:32,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 08:59:32,384 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 08:59:32,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 08:59:32,384 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 08:59:32,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 08:59:32,385 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 08:59:32,385 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 08:59:32,385 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-13 08:59:32,386 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-13 08:59:32,386 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 08:59:32,386 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-13 08:59:32,386 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 08:59:32,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 08:59:32,387 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 08:59:32,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 08:59:32,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 08:59:32,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 08:59:32,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 08:59:32,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 08:59:32,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 08:59:32,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 08:59:32,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 08:59:32,389 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-13 08:59:32,389 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-13 08:59:32,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 08:59:32,391 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 08:59:32,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 08:59:32,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 08:59:32,392 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-13 08:59:32,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 08:59:32,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 08:59:32,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 08:59:32,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 08:59:32,668 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 08:59:32,669 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 08:59:32,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/lcp.c [2024-09-13 08:59:33,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 08:59:34,179 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 08:59:34,181 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/lcp.c [2024-09-13 08:59:34,188 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/41689972c/003f2dbc1c0a4400ad6f6f9dbca1115c/FLAGa0d37de60 [2024-09-13 08:59:34,568 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/41689972c/003f2dbc1c0a4400ad6f6f9dbca1115c [2024-09-13 08:59:34,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 08:59:34,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 08:59:34,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 08:59:34,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 08:59:34,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 08:59:34,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,581 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a82889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34, skipping insertion in model container [2024-09-13 08:59:34,581 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,597 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 08:59:34,721 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/lcp.c[515,528] [2024-09-13 08:59:34,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 08:59:34,766 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 08:59:34,776 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/lcp.c[515,528] [2024-09-13 08:59:34,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 08:59:34,803 INFO L204 MainTranslator]: Completed translation [2024-09-13 08:59:34,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34 WrapperNode [2024-09-13 08:59:34,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 08:59:34,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 08:59:34,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 08:59:34,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 08:59:34,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,828 INFO L138 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 08:59:34,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 08:59:34,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 08:59:34,830 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 08:59:34,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 08:59:34,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,860 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 6, 7]. 47 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-09-13 08:59:34,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 08:59:34,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 08:59:34,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 08:59:34,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 08:59:34,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (1/1) ... [2024-09-13 08:59:34,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 08:59:34,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 08:59:34,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 08:59:34,922 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 08:59:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 08:59:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-13 08:59:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-09-13 08:59:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-09-13 08:59:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 08:59:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 08:59:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 08:59:34,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 08:59:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-09-13 08:59:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-09-13 08:59:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 08:59:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 08:59:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-13 08:59:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-09-13 08:59:34,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-09-13 08:59:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-09-13 08:59:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure lcp [2024-09-13 08:59:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure lcp [2024-09-13 08:59:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 08:59:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 08:59:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-09-13 08:59:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-09-13 08:59:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 08:59:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 08:59:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 08:59:35,052 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 08:59:35,054 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 08:59:35,254 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-09-13 08:59:35,254 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 08:59:35,276 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 08:59:35,276 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 08:59:35,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 08:59:35 BoogieIcfgContainer [2024-09-13 08:59:35,278 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 08:59:35,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 08:59:35,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 08:59:35,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 08:59:35,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 08:59:34" (1/3) ... [2024-09-13 08:59:35,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b53f21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 08:59:35, skipping insertion in model container [2024-09-13 08:59:35,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 08:59:34" (2/3) ... [2024-09-13 08:59:35,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b53f21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 08:59:35, skipping insertion in model container [2024-09-13 08:59:35,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 08:59:35" (3/3) ... [2024-09-13 08:59:35,290 INFO L112 eAbstractionObserver]: Analyzing ICFG lcp.c [2024-09-13 08:59:35,303 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 08:59:35,304 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 08:59:35,350 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 08:59:35,357 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;@59a210be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 08:59:35,358 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 08:59:35,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 08:59:35,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-13 08:59:35,367 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 08:59:35,368 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-13 08:59:35,368 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 08:59:35,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 384185568, now seen corresponding path program 1 times [2024-09-13 08:59:35,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 08:59:35,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890488543] [2024-09-13 08:59:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 08:59:35,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 08:59:35,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 08:59:35,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 08:59:35,395 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-09-13 08:59:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:35,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-09-13 08:59:35,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 08:59:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 08:59:35,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 08:59:35,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 08:59:35,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890488543] [2024-09-13 08:59:35,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890488543] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 08:59:35,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 08:59:35,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 08:59:35,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179321681] [2024-09-13 08:59:35,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 08:59:35,547 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 08:59:35,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 08:59:35,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 08:59:35,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 08:59:35,567 INFO L87 Difference]: Start difference. First operand has 44 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 08:59:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 08:59:35,595 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2024-09-13 08:59:35,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 08:59:35,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2024-09-13 08:59:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 08:59:35,606 INFO L225 Difference]: With dead ends: 82 [2024-09-13 08:59:35,606 INFO L226 Difference]: Without dead ends: 38 [2024-09-13 08:59:35,609 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 08:59:35,614 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 08:59:35,614 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 08:59:35,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-13 08:59:35,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-13 08:59:35,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 08:59:35,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-09-13 08:59:35,648 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 38 [2024-09-13 08:59:35,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 08:59:35,649 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-09-13 08:59:35,649 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 08:59:35,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-09-13 08:59:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 08:59:35,652 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 08:59:35,653 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-13 08:59:35,662 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-09-13 08:59:35,853 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 08:59:35,857 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 08:59:35,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash 96317513, now seen corresponding path program 1 times [2024-09-13 08:59:35,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 08:59:35,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138878557] [2024-09-13 08:59:35,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 08:59:35,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 08:59:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 08:59:35,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 08:59:35,861 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-09-13 08:59:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:35,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 08:59:35,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 08:59:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 08:59:36,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 08:59:36,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 08:59:36,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138878557] [2024-09-13 08:59:36,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138878557] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 08:59:36,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 08:59:36,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-13 08:59:36,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084775936] [2024-09-13 08:59:36,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 08:59:36,056 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 08:59:36,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 08:59:36,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 08:59:36,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-09-13 08:59:36,057 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 10 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 08:59:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 08:59:36,247 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2024-09-13 08:59:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 08:59:36,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2024-09-13 08:59:36,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 08:59:36,250 INFO L225 Difference]: With dead ends: 58 [2024-09-13 08:59:36,250 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 08:59:36,250 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-09-13 08:59:36,251 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 08:59:36,251 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 258 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 08:59:36,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 08:59:36,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-13 08:59:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 08:59:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-09-13 08:59:36,268 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 40 [2024-09-13 08:59:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 08:59:36,274 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-09-13 08:59:36,274 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 08:59:36,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-09-13 08:59:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-13 08:59:36,275 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 08:59:36,275 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-13 08:59:36,279 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-09-13 08:59:36,476 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 08:59:36,477 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 08:59:36,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 08:59:36,478 INFO L85 PathProgramCache]: Analyzing trace with hash 46925806, now seen corresponding path program 1 times [2024-09-13 08:59:36,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 08:59:36,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373596608] [2024-09-13 08:59:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 08:59:36,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 08:59:36,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 08:59:36,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 08:59:36,484 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-09-13 08:59:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:36,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-13 08:59:36,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 08:59:37,190 INFO L349 Elim1Store]: treesize reduction 70, result has 9.1 percent of original size [2024-09-13 08:59:37,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 16 [2024-09-13 08:59:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 08:59:37,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 08:59:45,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 08:59:45,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373596608] [2024-09-13 08:59:45,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373596608] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 08:59:45,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1865756180] [2024-09-13 08:59:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 08:59:45,576 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-09-13 08:59:45,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/cvc4 [2024-09-13 08:59:45,578 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-09-13 08:59:45,579 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-09-13 08:59:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 08:59:45,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 08:59:45,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 08:59:45,718 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 [2024-09-13 08:59:49,861 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0.base_BEFORE_CALL_2 (_ BitVec 32))) (= (select |c_#memory_int#2| v_main_~a~0.base_BEFORE_CALL_2) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2024-09-13 08:59:53,936 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0.base_BEFORE_CALL_3 (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int#2| v_main_~a~0.base_BEFORE_CALL_3))) is different from true [2024-09-13 09:00:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 09:00:10,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:00:14,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1865756180] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:00:14,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:00:14,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 27 [2024-09-13 09:00:14,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338912326] [2024-09-13 09:00:14,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:00:14,850 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-13 09:00:14,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 09:00:14,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-13 09:00:14,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=802, Unknown=9, NotChecked=114, Total=992 [2024-09-13 09:00:14,853 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 27 states, 19 states have (on average 2.473684210526316) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-13 09:00:56,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 09:01:17,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 09:01:21,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 09:02:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:02:02,279 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2024-09-13 09:02:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-13 09:02:02,280 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 19 states have (on average 2.473684210526316) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 43 [2024-09-13 09:02:02,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:02:02,282 INFO L225 Difference]: With dead ends: 89 [2024-09-13 09:02:02,282 INFO L226 Difference]: Without dead ends: 66 [2024-09-13 09:02:02,283 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 132.0s TimeCoverageRelationStatistics Valid=254, Invalid=2917, Unknown=29, NotChecked=222, Total=3422 [2024-09-13 09:02:02,284 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 82 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 22 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2024-09-13 09:02:02,286 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 380 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 623 Invalid, 3 Unknown, 149 Unchecked, 12.9s Time] [2024-09-13 09:02:02,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-13 09:02:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2024-09-13 09:02:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 41 states have internal predecessors, (45), 13 states have call successors, (13), 10 states have call predecessors, (13), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-09-13 09:02:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2024-09-13 09:02:02,309 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 43 [2024-09-13 09:02:02,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:02:02,309 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2024-09-13 09:02:02,309 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 19 states have (on average 2.473684210526316) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-13 09:02:02,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:02:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2024-09-13 09:02:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-13 09:02:02,310 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:02:02,310 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-13 09:02:02,316 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-09-13 09:02:02,514 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-09-13 09:02:02,713 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt [2024-09-13 09:02:02,714 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:02:02,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:02:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1935896750, now seen corresponding path program 1 times [2024-09-13 09:02:02,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 09:02:02,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720961828] [2024-09-13 09:02:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:02:02,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 09:02:02,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 09:02:02,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 09:02:02,719 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-09-13 09:02:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:02:02,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-09-13 09:02:02,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:02:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:02:02,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 09:02:02,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 09:02:02,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720961828] [2024-09-13 09:02:02,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720961828] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:02:02,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:02:02,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 09:02:02,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574899143] [2024-09-13 09:02:02,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:02:02,791 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 09:02:02,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 09:02:02,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 09:02:02,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 09:02:02,792 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 09:02:02,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:02:02,819 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2024-09-13 09:02:02,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 09:02:02,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2024-09-13 09:02:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:02:02,822 INFO L225 Difference]: With dead ends: 87 [2024-09-13 09:02:02,823 INFO L226 Difference]: Without dead ends: 61 [2024-09-13 09:02:02,823 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 09:02:02,827 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:02:02,827 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:02:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-13 09:02:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-09-13 09:02:02,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 41 states have internal predecessors, (42), 13 states have call successors, (13), 10 states have call predecessors, (13), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-09-13 09:02:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2024-09-13 09:02:02,843 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 43 [2024-09-13 09:02:02,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:02:02,843 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2024-09-13 09:02:02,843 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 09:02:02,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:02:02,845 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2024-09-13 09:02:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-13 09:02:02,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:02:02,847 INFO L216 NwaCegarLoop]: trace histogram [3, 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] [2024-09-13 09:02:02,855 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-09-13 09:02:03,048 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 09:02:03,049 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:02:03,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:02:03,049 INFO L85 PathProgramCache]: Analyzing trace with hash 204017195, now seen corresponding path program 1 times [2024-09-13 09:02:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 09:02:03,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809080084] [2024-09-13 09:02:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:02:03,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 09:02:03,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 09:02:03,054 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 09:02:03,055 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-09-13 09:02:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:02:03,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-13 09:02:03,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:02:05,943 INFO L349 Elim1Store]: treesize reduction 104, result has 39.9 percent of original size [2024-09-13 09:02:05,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 81 [2024-09-13 09:02:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 09:02:06,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:02:15,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 09:02:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809080084] [2024-09-13 09:02:15,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809080084] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:02:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1969119240] [2024-09-13 09:02:15,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:02:15,258 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-09-13 09:02:15,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/cvc4 [2024-09-13 09:02:15,260 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-09-13 09:02:15,260 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-09-13 09:02:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:02:15,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 09:02:15,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:02:15,359 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 [2024-09-13 09:02:19,627 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0.base_BEFORE_CALL_5 (_ BitVec 32))) (= (select |c_#memory_int#2| v_main_~a~0.base_BEFORE_CALL_5) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2024-09-13 09:02:23,790 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0.base_BEFORE_CALL_6 (_ BitVec 32))) (= (select |c_#memory_int#2| v_main_~a~0.base_BEFORE_CALL_6) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2024-09-13 09:02:28,124 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_3 (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int#2| v_check_~a.base_BEFORE_CALL_3))) is different from true [2024-09-13 09:02:28,237 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 35 treesize of output 29 [2024-09-13 09:02:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 4 not checked. [2024-09-13 09:02:28,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:02:56,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1969119240] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:02:56,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:02:56,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 33 [2024-09-13 09:02:56,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119412120] [2024-09-13 09:02:56,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:02:56,641 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-13 09:02:56,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 09:02:56,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-13 09:02:56,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=12, NotChecked=204, Total=1406 [2024-09-13 09:02:56,648 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 33 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 10 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-13 09:03:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:03:29,667 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2024-09-13 09:03:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-13 09:03:29,667 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 10 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) Word has length 46 [2024-09-13 09:03:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:03:29,670 INFO L225 Difference]: With dead ends: 87 [2024-09-13 09:03:29,670 INFO L226 Difference]: Without dead ends: 83 [2024-09-13 09:03:29,671 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 82.3s TimeCoverageRelationStatistics Valid=224, Invalid=2963, Unknown=17, NotChecked=336, Total=3540 [2024-09-13 09:03:29,672 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 477 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-09-13 09:03:29,672 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 507 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1058 Invalid, 0 Unknown, 477 Unchecked, 2.5s Time] [2024-09-13 09:03:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-13 09:03:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 51. [2024-09-13 09:03:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 10 states have call successors, (10), 10 states have call predecessors, (10), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 09:03:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2024-09-13 09:03:29,693 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2024-09-13 09:03:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:03:29,693 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2024-09-13 09:03:29,693 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 10 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-13 09:03:29,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:03:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2024-09-13 09:03:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 09:03:29,694 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:03:29,694 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-09-13 09:03:29,698 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-09-13 09:03:29,901 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-09-13 09:03:30,098 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt [2024-09-13 09:03:30,098 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:03:30,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:03:30,099 INFO L85 PathProgramCache]: Analyzing trace with hash 270624175, now seen corresponding path program 1 times [2024-09-13 09:03:30,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 09:03:30,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6270307] [2024-09-13 09:03:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:03:30,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 09:03:30,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 09:03:30,102 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 09:03:30,104 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-09-13 09:03:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:03:30,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-13 09:03:30,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:03:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 09:03:31,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:03:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 09:03:32,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 09:03:32,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6270307] [2024-09-13 09:03:32,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6270307] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:03:32,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:03:32,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2024-09-13 09:03:32,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795865224] [2024-09-13 09:03:32,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:03:32,700 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 09:03:32,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 09:03:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 09:03:32,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-09-13 09:03:32,701 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 28 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 8 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-13 09:03:35,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:03:35,036 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2024-09-13 09:03:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-13 09:03:35,037 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 8 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 50 [2024-09-13 09:03:35,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:03:35,038 INFO L225 Difference]: With dead ends: 90 [2024-09-13 09:03:35,038 INFO L226 Difference]: Without dead ends: 61 [2024-09-13 09:03:35,038 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2024-09-13 09:03:35,039 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-13 09:03:35,039 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 484 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-13 09:03:35,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-13 09:03:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-13 09:03:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 09:03:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2024-09-13 09:03:35,078 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 50 [2024-09-13 09:03:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:03:35,080 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2024-09-13 09:03:35,080 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 8 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-13 09:03:35,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:03:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2024-09-13 09:03:35,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-13 09:03:35,081 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:03:35,081 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2024-09-13 09:03:35,091 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-09-13 09:03:35,281 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 09:03:35,282 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:03:35,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:03:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash 972856628, now seen corresponding path program 2 times [2024-09-13 09:03:35,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 09:03:35,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909885519] [2024-09-13 09:03:35,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:03:35,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 09:03:35,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 09:03:35,287 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 09:03:35,287 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-09-13 09:03:35,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:03:35,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:03:35,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-13 09:03:35,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:03:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 09:03:36,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:03:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 09:03:39,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 09:03:39,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909885519] [2024-09-13 09:03:39,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909885519] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:03:39,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:03:39,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 34 [2024-09-13 09:03:39,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509292835] [2024-09-13 09:03:39,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:03:39,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-13 09:03:39,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 09:03:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-13 09:03:39,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 09:03:39,023 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 34 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 8 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-13 09:03:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:03:47,056 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2024-09-13 09:03:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-13 09:03:47,057 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 8 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 59 [2024-09-13 09:03:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:03:47,058 INFO L225 Difference]: With dead ends: 114 [2024-09-13 09:03:47,058 INFO L226 Difference]: Without dead ends: 79 [2024-09-13 09:03:47,059 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=558, Invalid=3224, Unknown=0, NotChecked=0, Total=3782 [2024-09-13 09:03:47,059 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-13 09:03:47,059 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 465 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-13 09:03:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-13 09:03:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2024-09-13 09:03:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 10 states have call successors, (10), 10 states have call predecessors, (10), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 09:03:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2024-09-13 09:03:47,092 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 59 [2024-09-13 09:03:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:03:47,093 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2024-09-13 09:03:47,093 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 8 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-13 09:03:47,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:03:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2024-09-13 09:03:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-13 09:03:47,094 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:03:47,094 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 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] [2024-09-13 09:03:47,099 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-09-13 09:03:47,295 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 09:03:47,296 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:03:47,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:03:47,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1516811372, now seen corresponding path program 3 times [2024-09-13 09:03:47,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 09:03:47,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400657696] [2024-09-13 09:03:47,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:03:47,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 09:03:47,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 09:03:47,299 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 09:03:47,300 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-09-13 09:03:48,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-13 09:03:48,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:03:48,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-13 09:03:48,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:03:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-09-13 09:03:48,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:03:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-09-13 09:03:50,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 09:03:50,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400657696] [2024-09-13 09:03:50,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400657696] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:03:50,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:03:50,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2024-09-13 09:03:50,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258294563] [2024-09-13 09:03:50,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:03:50,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-13 09:03:50,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 09:03:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-13 09:03:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-09-13 09:03:50,721 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 22 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 7 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-13 09:03:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:03:51,735 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2024-09-13 09:03:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 09:03:51,735 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 7 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 77 [2024-09-13 09:03:51,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:03:51,736 INFO L225 Difference]: With dead ends: 78 [2024-09-13 09:03:51,736 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 09:03:51,737 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2024-09-13 09:03:51,737 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 09:03:51,737 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 253 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 09:03:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 09:03:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 09:03:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 09:03:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 09:03:51,738 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2024-09-13 09:03:51,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:03:51,738 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 09:03:51,738 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 7 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-13 09:03:51,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:03:51,739 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 09:03:51,739 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 09:03:51,741 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 09:03:51,748 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-09-13 09:03:51,941 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 09:03:51,944 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2024-09-13 09:03:51,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.