./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu --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 cf8b375ecaf5e7f492500087304bb604d88ab477e5c68263b7ad030500238492 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:34,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:34,319 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:38:34,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:34,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:34,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:34,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:34,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:34,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:34,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:34,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:34,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:34,389 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:34,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:34,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:38:34,392 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:34,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:34,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:34,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:34,394 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:38:34,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:34,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:38:34,395 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:34,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:38:34,396 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:34,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:34,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:34,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:34,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:34,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:34,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:34,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:38:34,403 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:34,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:38:34,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:34,404 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:38:34,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:34,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:34,405 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:34,405 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf8b375ecaf5e7f492500087304bb604d88ab477e5c68263b7ad030500238492 [2023-11-19 07:38:34,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:34,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:34,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:34,699 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:34,700 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:34,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i [2023-11-19 07:38:38,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:38,415 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:38,416 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i [2023-11-19 07:38:38,433 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/data/2ba0e2f3c/f3c9ca86948d415fb54263b6184cdb98/FLAG4c97c92af [2023-11-19 07:38:38,458 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/data/2ba0e2f3c/f3c9ca86948d415fb54263b6184cdb98 [2023-11-19 07:38:38,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:38,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:38,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:38,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:38,480 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:38,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:38,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4604a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38, skipping insertion in model container [2023-11-19 07:38:38,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:38,532 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:38,741 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i[914,927] [2023-11-19 07:38:38,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:38,837 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:38,857 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i[914,927] [2023-11-19 07:38:38,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:38,919 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:38,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38 WrapperNode [2023-11-19 07:38:38,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:38,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:38,923 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:38,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:38,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:38,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:38,996 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2023-11-19 07:38:38,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:38,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:38,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:38,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:39,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:39,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:39,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:39,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:39,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:39,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:39,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:39,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:39,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:39,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:39,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:39,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:39,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (1/1) ... [2023-11-19 07:38:39,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:39,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:39,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:39,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:38:39,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:38:39,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:38:39,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:39,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:39,245 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:39,248 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:39,634 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:39,645 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:39,645 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:38:39,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:39 BoogieIcfgContainer [2023-11-19 07:38:39,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:39,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:38:39,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:38:39,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:38:39,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:38" (1/3) ... [2023-11-19 07:38:39,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266f79d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:39, skipping insertion in model container [2023-11-19 07:38:39,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:38" (2/3) ... [2023-11-19 07:38:39,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266f79d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:39, skipping insertion in model container [2023-11-19 07:38:39,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:39" (3/3) ... [2023-11-19 07:38:39,668 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-8.i [2023-11-19 07:38:39,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:38:39,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:38:39,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:39,785 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3d5de75c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:39,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:38:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:39,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:38:39,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:39,818 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:39,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:39,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:39,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1472964719, now seen corresponding path program 1 times [2023-11-19 07:38:39,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:39,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494962081] [2023-11-19 07:38:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:39,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:38:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:38:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:38:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:38:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:38:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:38:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 07:38:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:38:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 07:38:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-19 07:38:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 07:38:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:38:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-19 07:38:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-19 07:38:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:38:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:38:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:38:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:38:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 07:38:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-19 07:38:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:38:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:40,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494962081] [2023-11-19 07:38:40,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494962081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:40,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:40,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:40,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631604729] [2023-11-19 07:38:40,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:40,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:40,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:40,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:40,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:40,564 INFO L87 Difference]: Start difference. First operand has 55 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 07:38:40,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:40,615 INFO L93 Difference]: Finished difference Result 103 states and 176 transitions. [2023-11-19 07:38:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:38:40,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 125 [2023-11-19 07:38:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:40,626 INFO L225 Difference]: With dead ends: 103 [2023-11-19 07:38:40,627 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:38:40,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:40,637 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:40,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:40,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:38:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-19 07:38:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 74 transitions. [2023-11-19 07:38:40,712 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 74 transitions. Word has length 125 [2023-11-19 07:38:40,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:40,714 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 74 transitions. [2023-11-19 07:38:40,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 07:38:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 74 transitions. [2023-11-19 07:38:40,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:38:40,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:40,726 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:40,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:38:40,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:40,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash -286332501, now seen corresponding path program 1 times [2023-11-19 07:38:40,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:40,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815186656] [2023-11-19 07:38:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:40,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:38:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:38:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:38:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:38:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:38:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:38:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 07:38:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:38:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 07:38:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-19 07:38:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 07:38:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:38:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-19 07:38:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-19 07:38:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:38:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:38:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:38:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:38:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 07:38:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-19 07:38:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:38:41,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:41,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815186656] [2023-11-19 07:38:41,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815186656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:41,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:41,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:41,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145518967] [2023-11-19 07:38:41,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:41,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:41,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:41,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:41,343 INFO L87 Difference]: Start difference. First operand 51 states and 74 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:41,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:41,490 INFO L93 Difference]: Finished difference Result 99 states and 145 transitions. [2023-11-19 07:38:41,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:41,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2023-11-19 07:38:41,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:41,494 INFO L225 Difference]: With dead ends: 99 [2023-11-19 07:38:41,494 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:38:41,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:41,498 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:41,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 69 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:38:41,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:38:41,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-19 07:38:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2023-11-19 07:38:41,515 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 125 [2023-11-19 07:38:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:41,518 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2023-11-19 07:38:41,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2023-11-19 07:38:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:38:41,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:41,521 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:41,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:38:41,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:41,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash 393725869, now seen corresponding path program 1 times [2023-11-19 07:38:41,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:41,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667907570] [2023-11-19 07:38:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:38:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:38:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:38:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 07:38:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-19 07:38:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:38:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-19 07:38:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:38:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 07:38:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-19 07:38:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 07:38:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:38:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-19 07:38:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-19 07:38:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:41,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:38:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:38:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:38:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:38:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 07:38:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-19 07:38:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,028 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 07:38:42,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:42,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667907570] [2023-11-19 07:38:42,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667907570] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:42,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966287600] [2023-11-19 07:38:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:42,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:42,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:42,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:42,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:38:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:42,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 217 proven. 48 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-11-19 07:38:42,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 07:38:42,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966287600] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:42,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:42,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-11-19 07:38:42,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069513695] [2023-11-19 07:38:42,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:42,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:38:42,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:42,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:38:42,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:42,917 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-11-19 07:38:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:43,184 INFO L93 Difference]: Finished difference Result 107 states and 150 transitions. [2023-11-19 07:38:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:38:43,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 125 [2023-11-19 07:38:43,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:43,192 INFO L225 Difference]: With dead ends: 107 [2023-11-19 07:38:43,193 INFO L226 Difference]: Without dead ends: 59 [2023-11-19 07:38:43,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 285 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:38:43,203 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 23 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:43,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 100 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:38:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-19 07:38:43,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2023-11-19 07:38:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2023-11-19 07:38:43,244 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 125 [2023-11-19 07:38:43,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:43,246 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2023-11-19 07:38:43,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-11-19 07:38:43,255 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2023-11-19 07:38:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:38:43,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:43,261 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:43,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:43,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:43,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:43,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:43,479 INFO L85 PathProgramCache]: Analyzing trace with hash 395572911, now seen corresponding path program 1 times [2023-11-19 07:38:43,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:43,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134229666] [2023-11-19 07:38:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:43,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:43,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:38:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:43,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:38:43,772 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:38:43,774 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:38:43,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:38:43,781 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:38:43,788 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:38:43,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:38:43 BoogieIcfgContainer [2023-11-19 07:38:43,958 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:38:43,958 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:38:43,959 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:38:43,959 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:38:43,960 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:39" (3/4) ... [2023-11-19 07:38:43,962 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:38:43,963 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:38:43,965 INFO L158 Benchmark]: Toolchain (without parser) took 5496.05ms. Allocated memory was 174.1MB in the beginning and 224.4MB in the end (delta: 50.3MB). Free memory was 140.1MB in the beginning and 137.4MB in the end (delta: 2.7MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2023-11-19 07:38:43,967 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 111.1MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:38:43,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.84ms. Allocated memory is still 174.1MB. Free memory was 140.1MB in the beginning and 127.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:38:43,968 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.44ms. Allocated memory is still 174.1MB. Free memory was 127.8MB in the beginning and 125.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:38:43,969 INFO L158 Benchmark]: Boogie Preprocessor took 51.45ms. Allocated memory is still 174.1MB. Free memory was 125.3MB in the beginning and 123.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:38:43,969 INFO L158 Benchmark]: RCFGBuilder took 604.17ms. Allocated memory is still 174.1MB. Free memory was 123.7MB in the beginning and 108.0MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:38:43,970 INFO L158 Benchmark]: TraceAbstraction took 4297.49ms. Allocated memory was 174.1MB in the beginning and 224.4MB in the end (delta: 50.3MB). Free memory was 107.2MB in the beginning and 137.4MB in the end (delta: -30.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-11-19 07:38:43,970 INFO L158 Benchmark]: Witness Printer took 5.24ms. Allocated memory is still 224.4MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:38:43,973 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 111.1MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.84ms. Allocated memory is still 174.1MB. Free memory was 140.1MB in the beginning and 127.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.44ms. Allocated memory is still 174.1MB. Free memory was 127.8MB in the beginning and 125.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.45ms. Allocated memory is still 174.1MB. Free memory was 125.3MB in the beginning and 123.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 604.17ms. Allocated memory is still 174.1MB. Free memory was 123.7MB in the beginning and 108.0MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4297.49ms. Allocated memory was 174.1MB in the beginning and 224.4MB in the end (delta: 50.3MB). Free memory was 107.2MB in the beginning and 137.4MB in the end (delta: -30.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Witness Printer took 5.24ms. Allocated memory is still 224.4MB. Free memory is still 137.4MB. There was no memory consumed. 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 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 97, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 0; [L23] unsigned char var_1_4 = 0; [L24] unsigned char var_1_5 = 0; [L25] unsigned char var_1_6 = 0; [L26] unsigned char var_1_7 = 0; [L27] signed long int var_1_8 = 64; [L28] signed char var_1_11 = 2; [L29] signed char var_1_12 = 32; [L30] signed char var_1_13 = 2; [L31] float var_1_14 = 31.325; [L32] float var_1_15 = 7.4; [L33] float var_1_16 = 7.375; [L34] unsigned short int var_1_17 = 256; [L35] unsigned short int var_1_19 = 24509; [L36] unsigned short int var_1_20 = 32; [L37] unsigned short int var_1_21 = 4; [L38] signed char last_1_var_1_11 = 2; VAL [isInitial=0, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L101] isInitial = 1 [L102] FCALL initially() [L103] COND TRUE 1 [L104] CALL updateLastVariables() [L94] last_1_var_1_11 = var_1_11 VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L104] RET updateLastVariables() [L105] CALL updateVariables() [L61] var_1_4 = __VERIFIER_nondet_uchar() [L62] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L62] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L63] CALL assume_abort_if_not(var_1_4 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L63] RET assume_abort_if_not(var_1_4 <= 0) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L64] var_1_5 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L65] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L66] CALL assume_abort_if_not(var_1_5 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L66] RET assume_abort_if_not(var_1_5 <= 0) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L67] var_1_6 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L68] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L69] CALL assume_abort_if_not(var_1_6 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L69] RET assume_abort_if_not(var_1_6 <= 0) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=64] [L70] var_1_7 = __VERIFIER_nondet_uchar() [L71] CALL assume_abort_if_not(var_1_7 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L71] RET assume_abort_if_not(var_1_7 >= 1) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L72] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L72] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=32, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L73] var_1_12 = __VERIFIER_nondet_char() [L74] CALL assume_abort_if_not(var_1_12 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L74] RET assume_abort_if_not(var_1_12 >= -63) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L75] CALL assume_abort_if_not(var_1_12 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L75] RET assume_abort_if_not(var_1_12 <= 63) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=2, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L76] var_1_13 = __VERIFIER_nondet_char() [L77] CALL assume_abort_if_not(var_1_13 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L77] RET assume_abort_if_not(var_1_13 >= -63) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L78] CALL assume_abort_if_not(var_1_13 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L78] RET assume_abort_if_not(var_1_13 <= 63) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=37/5, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L79] var_1_15 = __VERIFIER_nondet_float() [L80] CALL assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L80] RET assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=59/8, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L81] var_1_16 = __VERIFIER_nondet_float() [L82] CALL assume_abort_if_not((var_1_16 >= 0.0F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L82] RET assume_abort_if_not((var_1_16 >= 0.0F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=24509, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L83] var_1_19 = __VERIFIER_nondet_ushort() [L84] CALL assume_abort_if_not(var_1_19 >= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L84] RET assume_abort_if_not(var_1_19 >= 16383) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L85] CALL assume_abort_if_not(var_1_19 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L85] RET assume_abort_if_not(var_1_19 <= 32767) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=32, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L86] var_1_20 = __VERIFIER_nondet_ushort() [L87] CALL assume_abort_if_not(var_1_20 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L87] RET assume_abort_if_not(var_1_20 >= 0) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L88] CALL assume_abort_if_not(var_1_20 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L88] RET assume_abort_if_not(var_1_20 <= 16383) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=4, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L89] var_1_21 = __VERIFIER_nondet_ushort() [L90] CALL assume_abort_if_not(var_1_21 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L90] RET assume_abort_if_not(var_1_21 >= 0) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L91] CALL assume_abort_if_not(var_1_21 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L91] RET assume_abort_if_not(var_1_21 <= 32767) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L105] RET updateVariables() [L106] CALL step() [L42] COND FALSE !(((((16) < 0 ) ? -(16) : (16))) < last_1_var_1_11) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_14=1253/40, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L45] var_1_14 = (var_1_15 - var_1_16) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_15=65542, var_1_16=65543, var_1_17=256, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L46] COND TRUE var_1_14 <= ((var_1_15 - var_1_16) * var_1_14) [L47] var_1_17 = ((var_1_19 - var_1_20) + var_1_21) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_15=65542, var_1_16=65543, var_1_17=1, var_1_19=16383, var_1_1=0, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L51] COND FALSE !(var_1_17 >= (8u * var_1_17)) [L54] var_1_1 = var_1_7 VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_15=65542, var_1_16=65543, var_1_17=1, var_1_19=16383, var_1_1=1, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L56] COND FALSE !(\read(var_1_5)) VAL [isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_15=65542, var_1_16=65543, var_1_17=1, var_1_19=16383, var_1_1=1, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L106] RET step() [L107] CALL, EXPR property() [L97-L98] return (((((var_1_17 >= (8u * var_1_17)) ? (var_1_1 == ((unsigned char) (! (var_1_4 || (var_1_5 || var_1_6))))) : (var_1_1 == ((unsigned char) var_1_7))) && (var_1_5 ? (var_1_8 == ((signed long int) (var_1_17 + var_1_11))) : 1)) && ((((((16) < 0 ) ? -(16) : (16))) < last_1_var_1_11) ? (var_1_11 == ((signed char) (var_1_12 + var_1_13))) : 1)) && (var_1_14 == ((float) (var_1_15 - var_1_16)))) && ((var_1_14 <= ((var_1_15 - var_1_16) * var_1_14)) ? (var_1_17 == ((unsigned short int) ((var_1_19 - var_1_20) + var_1_21))) : (var_1_17 == ((unsigned short int) var_1_20))) ; VAL [\result=0, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_15=65542, var_1_16=65543, var_1_17=1, var_1_19=16383, var_1_1=1, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L107] RET, EXPR property() [L107] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_15=65542, var_1_16=65543, var_1_17=1, var_1_19=16383, var_1_1=1, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_11=2, var_1_11=2, var_1_12=-63, var_1_13=-63, var_1_15=65542, var_1_16=65543, var_1_17=1, var_1_19=16383, var_1_1=1, var_1_20=16383, var_1_21=1, var_1_4=0, var_1_5=0, var_1_6=0, var_1_7=1, var_1_8=64] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 243 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 118 IncrementalHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 190 mSDtfsCounter, 118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 404 GetRequests, 390 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 625 NumberOfCodeBlocks, 625 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 620 ConstructedInterpolants, 0 QuantifiedInterpolants, 1686 SizeOfPredicates, 3 NumberOfNonLiveVariables, 292 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3656/3800 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:38:44,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu --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 cf8b375ecaf5e7f492500087304bb604d88ab477e5c68263b7ad030500238492 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:46,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:46,917 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-19 07:38:46,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:46,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:46,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:46,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:46,954 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:46,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:46,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:46,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:46,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:46,959 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:46,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:46,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:38:46,961 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:46,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:46,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:46,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:38:46,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:46,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:38:46,965 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:38:46,966 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:38:46,966 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:38:46,967 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:46,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:38:46,968 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:46,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:46,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:46,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:46,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:46,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:46,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:46,972 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:38:46,972 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:38:46,972 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:38:46,973 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:46,973 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:38:46,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:46,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:46,974 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:38:46,975 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:46,975 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf8b375ecaf5e7f492500087304bb604d88ab477e5c68263b7ad030500238492 [2023-11-19 07:38:47,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:47,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:47,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:47,464 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:47,465 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:47,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i [2023-11-19 07:38:50,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:51,093 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:51,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i [2023-11-19 07:38:51,109 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/data/4a92ec391/817502dc8e7c48c4935d15b2b92c3b10/FLAG524602bad [2023-11-19 07:38:51,125 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/data/4a92ec391/817502dc8e7c48c4935d15b2b92c3b10 [2023-11-19 07:38:51,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:51,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:51,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:51,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:51,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:51,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97c3fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51, skipping insertion in model container [2023-11-19 07:38:51,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,194 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:51,394 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i[914,927] [2023-11-19 07:38:51,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:51,488 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:51,504 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-8.i[914,927] [2023-11-19 07:38:51,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:51,556 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:51,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51 WrapperNode [2023-11-19 07:38:51,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:51,558 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:51,558 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:51,558 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:51,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,670 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 116 [2023-11-19 07:38:51,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:51,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:51,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:51,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:51,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:51,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:51,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:51,733 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:51,734 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (1/1) ... [2023-11-19 07:38:51,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:51,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:51,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:51,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:38:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:38:51,829 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:38:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:51,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:51,999 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:52,002 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:54,737 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:54,755 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:54,755 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:38:54,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:54 BoogieIcfgContainer [2023-11-19 07:38:54,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:54,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:38:54,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:38:54,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:38:54,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:51" (1/3) ... [2023-11-19 07:38:54,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212ee933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:54, skipping insertion in model container [2023-11-19 07:38:54,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:51" (2/3) ... [2023-11-19 07:38:54,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212ee933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:54, skipping insertion in model container [2023-11-19 07:38:54,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:54" (3/3) ... [2023-11-19 07:38:54,777 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-8.i [2023-11-19 07:38:54,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:38:54,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:38:54,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:54,872 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@275e694, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:54,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:38:54,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:54,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:38:54,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:54,893 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:54,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:54,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1472964719, now seen corresponding path program 1 times [2023-11-19 07:38:54,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:38:54,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467200703] [2023-11-19 07:38:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:54,923 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 [2023-11-19 07:38:54,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:38:54,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:38:54,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:38:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:55,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:38:55,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-11-19 07:38:55,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:55,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:38:55,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467200703] [2023-11-19 07:38:55,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467200703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:55,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:55,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909840772] [2023-11-19 07:38:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:55,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:55,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:38:55,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:55,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:55,444 INFO L87 Difference]: Start difference. First operand has 55 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 07:38:55,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:55,472 INFO L93 Difference]: Finished difference Result 103 states and 176 transitions. [2023-11-19 07:38:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:38:55,474 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 125 [2023-11-19 07:38:55,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:55,484 INFO L225 Difference]: With dead ends: 103 [2023-11-19 07:38:55,484 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:38:55,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:55,491 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:55,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:55,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:38:55,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-19 07:38:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 74 transitions. [2023-11-19 07:38:55,543 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 74 transitions. Word has length 125 [2023-11-19 07:38:55,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:55,544 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 74 transitions. [2023-11-19 07:38:55,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 07:38:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 74 transitions. [2023-11-19 07:38:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:38:55,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:55,548 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:55,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:38:55,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:38:55,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:55,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -286332501, now seen corresponding path program 1 times [2023-11-19 07:38:55,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:38:55,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209857556] [2023-11-19 07:38:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:55,759 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 [2023-11-19 07:38:55,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:38:55,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:38:55,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:38:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:56,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:38:56,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-19 07:38:56,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:56,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:38:56,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209857556] [2023-11-19 07:38:56,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209857556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:56,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:56,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:56,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633589548] [2023-11-19 07:38:56,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:56,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:56,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:38:56,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:56,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:56,648 INFO L87 Difference]: Start difference. First operand 51 states and 74 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:57,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:57,746 INFO L93 Difference]: Finished difference Result 99 states and 145 transitions. [2023-11-19 07:38:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:57,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2023-11-19 07:38:57,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:57,765 INFO L225 Difference]: With dead ends: 99 [2023-11-19 07:38:57,765 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:38:57,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:57,768 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:57,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 69 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:38:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:38:57,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-19 07:38:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:38:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2023-11-19 07:38:57,809 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 125 [2023-11-19 07:38:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:57,813 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2023-11-19 07:38:57,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 07:38:57,814 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2023-11-19 07:38:57,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:38:57,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:57,820 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:57,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:38:58,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:38:58,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:58,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash 393725869, now seen corresponding path program 1 times [2023-11-19 07:38:58,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:38:58,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097314054] [2023-11-19 07:38:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:58,030 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 [2023-11-19 07:38:58,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:38:58,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:38:58,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:38:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:58,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:38:58,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 217 proven. 48 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-11-19 07:38:58,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-11-19 07:38:59,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:38:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097314054] [2023-11-19 07:38:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097314054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:59,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:59,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:38:59,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058986511] [2023-11-19 07:38:59,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:59,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:38:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:38:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:38:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:59,269 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-11-19 07:39:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:00,463 INFO L93 Difference]: Finished difference Result 107 states and 150 transitions. [2023-11-19 07:39:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:39:00,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 125 [2023-11-19 07:39:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:00,479 INFO L225 Difference]: With dead ends: 107 [2023-11-19 07:39:00,480 INFO L226 Difference]: Without dead ends: 59 [2023-11-19 07:39:00,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:39:00,482 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 23 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:00,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 98 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:39:00,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-19 07:39:00,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2023-11-19 07:39:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:39:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2023-11-19 07:39:00,501 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 125 [2023-11-19 07:39:00,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:00,502 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2023-11-19 07:39:00,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-11-19 07:39:00,503 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2023-11-19 07:39:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:39:00,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:00,506 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:00,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:39:00,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:39:00,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:39:00,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash 395572911, now seen corresponding path program 1 times [2023-11-19 07:39:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:39:00,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901932135] [2023-11-19 07:39:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:00,715 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 [2023-11-19 07:39:00,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:39:00,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:39:00,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c25268-906d-4aad-b916-d59fccb092e8/bin/uautomizer-verify-uCwYo4JHxu/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)] Waiting until timeout for monitored process [2023-11-19 07:39:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:01,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 07:39:01,059 INFO L285 TraceCheckSpWp]: Computing forward predicates...