./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 a4fd4ec86d0542e34aa772f57fe8fd3f67e11de6063cb3b9506f2b9e03dc2d5e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:42:59,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:42:59,472 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:42:59,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:42:59,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:42:59,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:42:59,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:42:59,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:42:59,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:42:59,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:42:59,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:42:59,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:42:59,531 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:42:59,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:42:59,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:42:59,534 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:42:59,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:42:59,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:42:59,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:42:59,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:42:59,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:42:59,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:42:59,537 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:42:59,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:42:59,537 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:42:59,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:42:59,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:42:59,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:42:59,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:42:59,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:42:59,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:42:59,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:42:59,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:42:59,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:42:59,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:42:59,542 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:42:59,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:42:59,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:42:59,543 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:42:59,543 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_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4fd4ec86d0542e34aa772f57fe8fd3f67e11de6063cb3b9506f2b9e03dc2d5e [2023-11-06 22:42:59,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:42:59,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:42:59,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:42:59,832 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:42:59,833 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:42:59,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i [2023-11-06 22:43:02,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:43:03,187 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:43:03,188 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i [2023-11-06 22:43:03,197 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/data/534ee9503/ea90d4905203415d862494ed019a969d/FLAGd9c46efc7 [2023-11-06 22:43:03,211 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/data/534ee9503/ea90d4905203415d862494ed019a969d [2023-11-06 22:43:03,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:43:03,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:43:03,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:43:03,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:43:03,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:43:03,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51beba12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03, skipping insertion in model container [2023-11-06 22:43:03,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,254 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:43:03,394 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_b82d9e0e-822b-45d9-9682-91c4147351ad/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i[915,928] [2023-11-06 22:43:03,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:43:03,445 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:43:03,458 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_b82d9e0e-822b-45d9-9682-91c4147351ad/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i[915,928] [2023-11-06 22:43:03,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:43:03,495 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:43:03,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03 WrapperNode [2023-11-06 22:43:03,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:43:03,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:43:03,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:43:03,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:43:03,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,521 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,548 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124 [2023-11-06 22:43:03,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:43:03,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:43:03,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:43:03,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:43:03,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,568 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:43:03,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:43:03,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:43:03,580 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:43:03,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (1/1) ... [2023-11-06 22:43:03,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:43:03,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:03,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:43:03,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:43:03,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:43:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:43:03,649 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:43:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:43:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:43:03,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:43:03,734 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:43:03,736 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:43:03,997 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:43:04,004 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:43:04,005 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:43:04,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:04 BoogieIcfgContainer [2023-11-06 22:43:04,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:43:04,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:43:04,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:43:04,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:43:04,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:43:03" (1/3) ... [2023-11-06 22:43:04,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77880020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:04, skipping insertion in model container [2023-11-06 22:43:04,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:03" (2/3) ... [2023-11-06 22:43:04,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77880020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:04, skipping insertion in model container [2023-11-06 22:43:04,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:04" (3/3) ... [2023-11-06 22:43:04,018 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-68.i [2023-11-06 22:43:04,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:43:04,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:43:04,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:43:04,096 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=LoopsAndPotentialCycles, 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;@7833c665, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:43:04,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:43:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 38 states have internal predecessors, (51), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:43:04,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:43:04,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:04,114 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:04,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:04,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash -82192935, now seen corresponding path program 1 times [2023-11-06 22:43:04,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:04,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621818476] [2023-11-06 22:43:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:04,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:04,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621818476] [2023-11-06 22:43:04,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:43:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106693666] [2023-11-06 22:43:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:04,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:04,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:04,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:04,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:43:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:04,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:43:04,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-06 22:43:04,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106693666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:04,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:04,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:43:04,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958552854] [2023-11-06 22:43:04,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:04,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:43:04,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:04,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:43:04,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:43:04,608 INFO L87 Difference]: Start difference. First operand has 54 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 38 states have internal predecessors, (51), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:43:04,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:04,645 INFO L93 Difference]: Finished difference Result 105 states and 169 transitions. [2023-11-06 22:43:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:43:04,647 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2023-11-06 22:43:04,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:04,654 INFO L225 Difference]: With dead ends: 105 [2023-11-06 22:43:04,654 INFO L226 Difference]: Without dead ends: 50 [2023-11-06 22:43:04,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:43:04,662 INFO L413 NwaCegarLoop]: 76 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, 76 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 [2023-11-06 22:43:04,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:43:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-06 22:43:04,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-06 22:43:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:43:04,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 72 transitions. [2023-11-06 22:43:04,717 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 72 transitions. Word has length 94 [2023-11-06 22:43:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:04,717 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 72 transitions. [2023-11-06 22:43:04,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:43:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 72 transitions. [2023-11-06 22:43:04,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:43:04,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:04,723 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:04,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:04,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 22:43:04,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:04,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:04,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1447235679, now seen corresponding path program 1 times [2023-11-06 22:43:04,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:04,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613575395] [2023-11-06 22:43:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:04,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:05,020 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:05,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975747445] [2023-11-06 22:43:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:05,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:05,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:05,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:05,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:43:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:05,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:43:05,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:43:05,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:05,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:05,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613575395] [2023-11-06 22:43:05,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:05,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975747445] [2023-11-06 22:43:05,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975747445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:05,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:05,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:43:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061753735] [2023-11-06 22:43:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:05,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:43:05,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:05,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:43:05,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:43:05,374 INFO L87 Difference]: Start difference. First operand 50 states and 72 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:43:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:05,492 INFO L93 Difference]: Finished difference Result 115 states and 166 transitions. [2023-11-06 22:43:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:43:05,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2023-11-06 22:43:05,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:05,501 INFO L225 Difference]: With dead ends: 115 [2023-11-06 22:43:05,501 INFO L226 Difference]: Without dead ends: 68 [2023-11-06 22:43:05,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:43:05,506 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 24 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:05,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 181 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:43:05,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-06 22:43:05,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2023-11-06 22:43:05,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:43:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2023-11-06 22:43:05,526 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 94 [2023-11-06 22:43:05,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:05,528 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2023-11-06 22:43:05,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:43:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2023-11-06 22:43:05,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-06 22:43:05,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:05,532 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:05,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:05,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:05,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:05,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash 307239698, now seen corresponding path program 1 times [2023-11-06 22:43:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950139955] [2023-11-06 22:43:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:05,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:05,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:05,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683413492] [2023-11-06 22:43:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:05,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:05,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:05,794 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:05,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:43:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:05,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:43:05,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 165 proven. 27 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-06 22:43:06,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-06 22:43:06,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:06,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950139955] [2023-11-06 22:43:06,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:06,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683413492] [2023-11-06 22:43:06,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683413492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:06,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:06,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-06 22:43:06,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122397405] [2023-11-06 22:43:06,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:06,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:43:06,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:06,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:43:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:43:06,629 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-06 22:43:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:07,177 INFO L93 Difference]: Finished difference Result 223 states and 321 transitions. [2023-11-06 22:43:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:43:07,178 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 95 [2023-11-06 22:43:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:07,181 INFO L225 Difference]: With dead ends: 223 [2023-11-06 22:43:07,181 INFO L226 Difference]: Without dead ends: 168 [2023-11-06 22:43:07,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:43:07,184 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 241 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:07,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 204 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:43:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-06 22:43:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 128. [2023-11-06 22:43:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 96 states have (on average 1.375) internal successors, (132), 96 states have internal predecessors, (132), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-06 22:43:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 188 transitions. [2023-11-06 22:43:07,224 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 188 transitions. Word has length 95 [2023-11-06 22:43:07,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:07,226 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 188 transitions. [2023-11-06 22:43:07,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-06 22:43:07,227 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 188 transitions. [2023-11-06 22:43:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-06 22:43:07,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:07,235 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:07,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:07,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:43:07,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:07,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:07,442 INFO L85 PathProgramCache]: Analyzing trace with hash 987298068, now seen corresponding path program 1 times [2023-11-06 22:43:07,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:07,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951464605] [2023-11-06 22:43:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:07,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:07,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:07,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621765703] [2023-11-06 22:43:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:07,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:07,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:07,492 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:07,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:43:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:07,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:43:07,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:43:07,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:43:07,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:07,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951464605] [2023-11-06 22:43:07,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:07,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621765703] [2023-11-06 22:43:07,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621765703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:07,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:07,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:43:07,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911316915] [2023-11-06 22:43:07,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:07,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:43:07,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:07,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:43:07,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:43:07,895 INFO L87 Difference]: Start difference. First operand 128 states and 188 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:43:08,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:08,108 INFO L93 Difference]: Finished difference Result 263 states and 379 transitions. [2023-11-06 22:43:08,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:43:08,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2023-11-06 22:43:08,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:08,112 INFO L225 Difference]: With dead ends: 263 [2023-11-06 22:43:08,112 INFO L226 Difference]: Without dead ends: 136 [2023-11-06 22:43:08,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:43:08,122 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 93 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:08,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 245 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:43:08,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-06 22:43:08,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2023-11-06 22:43:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 88 states have internal predecessors, (118), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-06 22:43:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 174 transitions. [2023-11-06 22:43:08,164 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 174 transitions. Word has length 95 [2023-11-06 22:43:08,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:08,166 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 174 transitions. [2023-11-06 22:43:08,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:43:08,167 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 174 transitions. [2023-11-06 22:43:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 22:43:08,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:08,171 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:08,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:08,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:08,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:08,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:08,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1901915836, now seen corresponding path program 1 times [2023-11-06 22:43:08,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:08,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145185519] [2023-11-06 22:43:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:08,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:08,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:43:08,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910883032] [2023-11-06 22:43:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:08,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:08,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:08,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:08,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:43:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:08,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:43:08,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-06 22:43:09,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:43:26,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:26,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145185519] [2023-11-06 22:43:26,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:43:26,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910883032] [2023-11-06 22:43:26,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910883032] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:26,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:43:26,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-06 22:43:26,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689154849] [2023-11-06 22:43:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:26,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:43:26,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:26,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:43:26,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:43:26,678 INFO L87 Difference]: Start difference. First operand 120 states and 174 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:43:32,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:43:42,403 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:43:57,929 WARN L293 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:43:59,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-06 22:44:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:00,619 INFO L93 Difference]: Finished difference Result 367 states and 531 transitions. [2023-11-06 22:44:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:44:00,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2023-11-06 22:44:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:00,625 INFO L225 Difference]: With dead ends: 367 [2023-11-06 22:44:00,625 INFO L226 Difference]: Without dead ends: 365 [2023-11-06 22:44:00,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=111, Invalid=488, Unknown=1, NotChecked=0, Total=600 [2023-11-06 22:44:00,626 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 179 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 93 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:00,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 403 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 355 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2023-11-06 22:44:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-06 22:44:00,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 230. [2023-11-06 22:44:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 174 states have (on average 1.3045977011494252) internal successors, (227), 176 states have internal predecessors, (227), 49 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-06 22:44:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 325 transitions. [2023-11-06 22:44:00,757 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 325 transitions. Word has length 96 [2023-11-06 22:44:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:00,758 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 325 transitions. [2023-11-06 22:44:00,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:44:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 325 transitions. [2023-11-06 22:44:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-06 22:44:00,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:00,760 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:00,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:00,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:00,966 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:00,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:00,966 INFO L85 PathProgramCache]: Analyzing trace with hash -967793464, now seen corresponding path program 1 times [2023-11-06 22:44:00,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:00,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071591379] [2023-11-06 22:44:00,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:00,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:00,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:44:00,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39326031] [2023-11-06 22:44:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:00,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:00,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:00,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:01,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:44:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:44:01,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:44:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:44:01,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:44:01,242 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:44:01,243 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:44:01,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 22:44:01,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:44:01,454 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-06 22:44:01,457 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:44:01,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:01 BoogieIcfgContainer [2023-11-06 22:44:01,540 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:44:01,540 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:44:01,540 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:44:01,541 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:44:01,541 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:04" (3/4) ... [2023-11-06 22:44:01,543 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:44:01,544 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:44:01,545 INFO L158 Benchmark]: Toolchain (without parser) took 58330.23ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 124.6MB in the beginning and 103.6MB in the end (delta: 21.0MB). Peak memory consumption was 93.9MB. Max. memory is 16.1GB. [2023-11-06 22:44:01,545 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory was 71.2MB in the beginning and 71.0MB in the end (delta: 203.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:44:01,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.69ms. Allocated memory is still 155.2MB. Free memory was 124.6MB in the beginning and 112.3MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:44:01,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.81ms. Allocated memory is still 155.2MB. Free memory was 112.3MB in the beginning and 110.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:44:01,546 INFO L158 Benchmark]: Boogie Preprocessor took 30.22ms. Allocated memory is still 155.2MB. Free memory was 110.5MB in the beginning and 108.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:44:01,547 INFO L158 Benchmark]: RCFGBuilder took 427.25ms. Allocated memory is still 155.2MB. Free memory was 108.9MB in the beginning and 93.8MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:44:01,547 INFO L158 Benchmark]: TraceAbstraction took 57529.54ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 93.0MB in the beginning and 104.6MB in the end (delta: -11.7MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2023-11-06 22:44:01,548 INFO L158 Benchmark]: Witness Printer took 3.97ms. Allocated memory is still 226.5MB. Free memory was 104.6MB in the beginning and 103.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:44:01,551 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory was 71.2MB in the beginning and 71.0MB in the end (delta: 203.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.69ms. Allocated memory is still 155.2MB. Free memory was 124.6MB in the beginning and 112.3MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.81ms. Allocated memory is still 155.2MB. Free memory was 112.3MB in the beginning and 110.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.22ms. Allocated memory is still 155.2MB. Free memory was 110.5MB in the beginning and 108.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 427.25ms. Allocated memory is still 155.2MB. Free memory was 108.9MB in the beginning and 93.8MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 57529.54ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 93.0MB in the beginning and 104.6MB in the end (delta: -11.7MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Witness Printer took 3.97ms. Allocated memory is still 226.5MB. Free memory was 104.6MB in the beginning and 103.6MB in the end (delta: 1.0MB). 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 69, overapproximation of someBinaryDOUBLEComparisonOperation at line 94, overapproximation of shiftRight at line 94. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = 32; [L23] float var_1_2 = 64.5; [L24] float var_1_3 = 16.8; [L25] signed long int var_1_8 = 10; [L26] signed long int var_1_9 = 25; [L27] double var_1_10 = 0.75; [L28] signed long int var_1_11 = 2; [L29] signed long int var_1_12 = 32; [L30] unsigned char var_1_13 = 0; [L31] unsigned char var_1_14 = 0; [L32] double var_1_15 = 50.2; [L33] signed long int last_1_var_1_9 = 25; [L34] double last_1_var_1_10 = 0.75; VAL [isInitial=0, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_2=129/2, var_1_3=84/5, var_1_8=10, var_1_9=25] [L98] isInitial = 1 [L99] FCALL initially() [L100] int k_loop; [L101] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_2=129/2, var_1_3=84/5, var_1_8=10, var_1_9=25] [L101] COND TRUE k_loop < 1 [L102] CALL updateLastVariables() [L90] last_1_var_1_9 = var_1_9 [L91] last_1_var_1_10 = var_1_10 VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_2=129/2, var_1_3=84/5, var_1_8=10, var_1_9=25] [L102] RET updateLastVariables() [L103] CALL updateVariables() [L66] var_1_2 = __VERIFIER_nondet_float() [L67] CALL assume_abort_if_not((var_1_2 >= 0.0F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=84/5, var_1_8=10, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=84/5, var_1_8=10, var_1_9=25] [L67] RET assume_abort_if_not((var_1_2 >= 0.0F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=84/5, var_1_8=10, var_1_9=25] [L68] var_1_3 = __VERIFIER_nondet_float() [L69] CALL assume_abort_if_not((var_1_3 >= 0.0F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=10, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=10, var_1_9=25] [L69] RET assume_abort_if_not((var_1_3 >= 0.0F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=10, var_1_9=25] [L70] var_1_8 = __VERIFIER_nondet_long() [L71] CALL assume_abort_if_not(var_1_8 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L71] RET assume_abort_if_not(var_1_8 >= -2147483648) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L72] CALL assume_abort_if_not(var_1_8 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L72] RET assume_abort_if_not(var_1_8 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L73] CALL assume_abort_if_not(var_1_8 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L73] RET assume_abort_if_not(var_1_8 != 0) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=2, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L74] var_1_11 = __VERIFIER_nondet_long() [L75] CALL assume_abort_if_not(var_1_11 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L75] RET assume_abort_if_not(var_1_11 >= -1) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L76] CALL assume_abort_if_not(var_1_11 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L76] RET assume_abort_if_not(var_1_11 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L77] var_1_12 = __VERIFIER_nondet_long() [L78] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L78] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L79] CALL assume_abort_if_not(var_1_12 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L79] RET assume_abort_if_not(var_1_12 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=0, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L80] var_1_13 = __VERIFIER_nondet_uchar() [L81] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L81] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L82] CALL assume_abort_if_not(var_1_13 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L82] RET assume_abort_if_not(var_1_13 <= 1) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=0, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L83] var_1_14 = __VERIFIER_nondet_uchar() [L84] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L84] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L85] CALL assume_abort_if_not(var_1_14 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L85] RET assume_abort_if_not(var_1_14 <= 1) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=251/5, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L86] var_1_15 = __VERIFIER_nondet_double() [L87] CALL assume_abort_if_not((var_1_15 >= -922337.2036854765600e+13F && 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_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L87] RET assume_abort_if_not((var_1_15 >= -922337.2036854765600e+13F && 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_10=3/4, last_1_var_1_9=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L103] RET updateVariables() [L104] CALL step() [L38] signed long int stepLocal_0 = last_1_var_1_9 + last_1_var_1_9; VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, stepLocal_0=50, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=32, var_1_3=2, var_1_8=27, var_1_9=25] [L39] COND FALSE !((var_1_2 - var_1_3) >= last_1_var_1_10) [L44] var_1_1 = last_1_var_1_9 VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, stepLocal_0=50, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8=27, var_1_9=25] [L46] signed long int stepLocal_2 = var_1_1; [L47] signed long int stepLocal_1 = var_1_1; VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, stepLocal_0=50, stepLocal_1=25, stepLocal_2=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8=27, var_1_9=25] [L48] EXPR var_1_8 >> last_1_var_1_9 VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, stepLocal_0=50, stepLocal_1=25, stepLocal_2=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8 >> last_1_var_1_9=25, var_1_8=27, var_1_9=25] [L48] COND FALSE !((var_1_8 >> last_1_var_1_9) > stepLocal_1) [L55] var_1_9 = last_1_var_1_9 VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, stepLocal_0=50, stepLocal_1=25, stepLocal_2=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8=27, var_1_9=25] [L57] COND TRUE ((((var_1_9) > (var_1_1)) ? (var_1_9) : (var_1_1))) == (var_1_9 * (var_1_11 - var_1_12)) VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, stepLocal_0=50, stepLocal_1=25, stepLocal_2=25, var_1_10=3/4, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8=27, var_1_9=25] [L58] COND TRUE var_1_13 || var_1_14 [L59] var_1_10 = var_1_15 VAL [isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, stepLocal_0=50, stepLocal_1=25, stepLocal_2=25, var_1_10=3, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8=27, var_1_9=25] [L104] RET step() [L105] CALL, EXPR property() [L94] EXPR (((var_1_2 - var_1_3) >= last_1_var_1_10) ? (((last_1_var_1_9 + last_1_var_1_9) >= (last_1_var_1_9 / var_1_8)) ? (var_1_1 == ((signed long int) last_1_var_1_9)) : 1) : (var_1_1 == ((signed long int) last_1_var_1_9))) && (((var_1_8 >> last_1_var_1_9) > var_1_1) ? (((var_1_1 >> 8) > var_1_1) ? (var_1_9 == ((signed long int) var_1_1)) : (var_1_9 == ((signed long int) last_1_var_1_9))) : (var_1_9 == ((signed long int) last_1_var_1_9))) VAL [(((var_1_2 - var_1_3) >= last_1_var_1_10) ? (((last_1_var_1_9 + last_1_var_1_9) >= (last_1_var_1_9 / var_1_8)) ? (var_1_1 == ((signed long int) last_1_var_1_9)) : 1) : (var_1_1 == ((signed long int) last_1_var_1_9))) && (((var_1_8 >> last_1_var_1_9) > var_1_1) ? (((var_1_1 >> 8) > var_1_1) ? (var_1_9 == ((signed long int) var_1_1)) : (var_1_9 == ((signed long int) last_1_var_1_9))) : (var_1_9 == ((signed long int) last_1_var_1_9)))=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8=27, var_1_9=25] [L94] EXPR var_1_8 >> last_1_var_1_9 VAL [(((var_1_2 - var_1_3) >= last_1_var_1_10) ? (((last_1_var_1_9 + last_1_var_1_9) >= (last_1_var_1_9 / var_1_8)) ? (var_1_1 == ((signed long int) last_1_var_1_9)) : 1) : (var_1_1 == ((signed long int) last_1_var_1_9))) && (((var_1_8 >> last_1_var_1_9) > var_1_1) ? (((var_1_1 >> 8) > var_1_1) ? (var_1_9 == ((signed long int) var_1_1)) : (var_1_9 == ((signed long int) last_1_var_1_9))) : (var_1_9 == ((signed long int) last_1_var_1_9)))=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8 >> last_1_var_1_9=26, var_1_8=27, var_1_9=25] [L94] EXPR (((var_1_2 - var_1_3) >= last_1_var_1_10) ? (((last_1_var_1_9 + last_1_var_1_9) >= (last_1_var_1_9 / var_1_8)) ? (var_1_1 == ((signed long int) last_1_var_1_9)) : 1) : (var_1_1 == ((signed long int) last_1_var_1_9))) && (((var_1_8 >> last_1_var_1_9) > var_1_1) ? (((var_1_1 >> 8) > var_1_1) ? (var_1_9 == ((signed long int) var_1_1)) : (var_1_9 == ((signed long int) last_1_var_1_9))) : (var_1_9 == ((signed long int) last_1_var_1_9))) VAL [(((var_1_2 - var_1_3) >= last_1_var_1_10) ? (((last_1_var_1_9 + last_1_var_1_9) >= (last_1_var_1_9 / var_1_8)) ? (var_1_1 == ((signed long int) last_1_var_1_9)) : 1) : (var_1_1 == ((signed long int) last_1_var_1_9))) && (((var_1_8 >> last_1_var_1_9) > var_1_1) ? (((var_1_1 >> 8) > var_1_1) ? (var_1_9 == ((signed long int) var_1_1)) : (var_1_9 == ((signed long int) last_1_var_1_9))) : (var_1_9 == ((signed long int) last_1_var_1_9)))=1, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8 >> last_1_var_1_9=26, var_1_8=27, var_1_9=25] [L94-L95] return ((((var_1_2 - var_1_3) >= last_1_var_1_10) ? (((last_1_var_1_9 + last_1_var_1_9) >= (last_1_var_1_9 / var_1_8)) ? (var_1_1 == ((signed long int) last_1_var_1_9)) : 1) : (var_1_1 == ((signed long int) last_1_var_1_9))) && (((var_1_8 >> last_1_var_1_9) > var_1_1) ? (((var_1_1 >> 8) > var_1_1) ? (var_1_9 == ((signed long int) var_1_1)) : (var_1_9 == ((signed long int) last_1_var_1_9))) : (var_1_9 == ((signed long int) last_1_var_1_9)))) && ((((((var_1_9) > (var_1_1)) ? (var_1_9) : (var_1_1))) == (var_1_9 * (var_1_11 - var_1_12))) ? ((var_1_13 || var_1_14) ? (var_1_10 == ((double) var_1_15)) : (var_1_10 == ((double) var_1_15))) : 1) ; [L105] RET, EXPR property() [L105] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8=27, var_1_9=25] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=3/4, last_1_var_1_9=25, var_1_10=3, var_1_11=4, var_1_12=3, var_1_13=1, var_1_14=1, var_1_15=3, var_1_1=25, var_1_3=2, var_1_8=27, var_1_9=25] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.4s, OverallIterations: 6, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 548 SdHoareTripleChecker+Valid, 7.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 537 mSDsluCounter, 1109 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 784 mSDsCounter, 230 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 767 IncrementalHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 230 mSolverCounterUnsat, 325 mSDtfsCounter, 767 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 685 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 31.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=5, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 201 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 665 NumberOfCodeBlocks, 665 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 658 ConstructedInterpolants, 6 QuantifiedInterpolants, 2125 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1182 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 2482/2548 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 [2023-11-06 22:44:01,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 a4fd4ec86d0542e34aa772f57fe8fd3f67e11de6063cb3b9506f2b9e03dc2d5e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:44:04,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:44:04,242 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 22:44:04,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:44:04,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:44:04,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:44:04,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:44:04,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:44:04,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:44:04,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:44:04,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:44:04,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:44:04,296 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:44:04,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:44:04,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:44:04,304 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:44:04,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:44:04,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:44:04,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:44:04,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:44:04,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:44:04,308 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:44:04,309 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:44:04,309 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:44:04,310 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:44:04,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:44:04,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:44:04,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:44:04,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:44:04,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:44:04,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:04,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:44:04,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:44:04,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:44:04,320 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:44:04,320 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:44:04,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:44:04,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:44:04,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:44:04,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:44:04,322 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:44:04,323 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:44:04,323 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_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4fd4ec86d0542e34aa772f57fe8fd3f67e11de6063cb3b9506f2b9e03dc2d5e [2023-11-06 22:44:04,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:44:04,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:44:04,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:44:04,775 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:44:04,775 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:44:04,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i [2023-11-06 22:44:07,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:44:08,151 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:44:08,152 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i [2023-11-06 22:44:08,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/data/03ded9ac1/919b0fa9d80d40a0bd6d47ec3706167a/FLAG0eaec3583 [2023-11-06 22:44:08,468 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/data/03ded9ac1/919b0fa9d80d40a0bd6d47ec3706167a [2023-11-06 22:44:08,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:44:08,480 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:44:08,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:08,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:44:08,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:44:08,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:08,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8dee4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08, skipping insertion in model container [2023-11-06 22:44:08,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:08,531 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:44:08,719 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_b82d9e0e-822b-45d9-9682-91c4147351ad/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i[915,928] [2023-11-06 22:44:08,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:08,815 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:44:08,834 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_b82d9e0e-822b-45d9-9682-91c4147351ad/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-68.i[915,928] [2023-11-06 22:44:08,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:08,899 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:44:08,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08 WrapperNode [2023-11-06 22:44:08,900 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:08,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:08,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:44:08,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:44:08,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:08,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:08,977 INFO L138 Inliner]: procedures = 27, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-11-06 22:44:08,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:08,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:44:08,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:44:08,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:44:08,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:08,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:09,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:09,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:09,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:09,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:09,038 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:09,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:09,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:44:09,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:44:09,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:44:09,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:44:09,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (1/1) ... [2023-11-06 22:44:09,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:09,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:09,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:44:09,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:44:09,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:44:09,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:44:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:44:09,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:44:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:44:09,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:44:09,271 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:44:09,273 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:44:10,987 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:44:10,997 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:44:10,998 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:44:11,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:11 BoogieIcfgContainer [2023-11-06 22:44:11,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:44:11,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:44:11,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:44:11,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:44:11,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:08" (1/3) ... [2023-11-06 22:44:11,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54918880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:11, skipping insertion in model container [2023-11-06 22:44:11,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:08" (2/3) ... [2023-11-06 22:44:11,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54918880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:11, skipping insertion in model container [2023-11-06 22:44:11,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:11" (3/3) ... [2023-11-06 22:44:11,013 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-68.i [2023-11-06 22:44:11,027 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:44:11,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:44:11,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:44:11,093 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=LoopsAndPotentialCycles, 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;@791300fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:44:11,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:44:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 32 states have (on average 1.34375) internal successors, (43), 33 states have internal predecessors, (43), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:44:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-06 22:44:11,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:11,113 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:11,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:11,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:11,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1400635848, now seen corresponding path program 1 times [2023-11-06 22:44:11,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:44:11,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545069297] [2023-11-06 22:44:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:11,141 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 [2023-11-06 22:44:11,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:44:11,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:44:11,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:44:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:11,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:44:11,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-06 22:44:11,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:11,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:44:11,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545069297] [2023-11-06 22:44:11,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545069297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:11,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:11,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:11,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291810129] [2023-11-06 22:44:11,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:11,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:44:11,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:44:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:44:11,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:44:11,631 INFO L87 Difference]: Start difference. First operand has 49 states, 32 states have (on average 1.34375) internal successors, (43), 33 states have internal predecessors, (43), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:44:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:11,660 INFO L93 Difference]: Finished difference Result 95 states and 153 transitions. [2023-11-06 22:44:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:44:11,662 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 91 [2023-11-06 22:44:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:11,669 INFO L225 Difference]: With dead ends: 95 [2023-11-06 22:44:11,670 INFO L226 Difference]: Without dead ends: 45 [2023-11-06 22:44:11,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:44:11,677 INFO L413 NwaCegarLoop]: 68 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, 68 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 [2023-11-06 22:44:11,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-06 22:44:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-06 22:44:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:44:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2023-11-06 22:44:11,722 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 91 [2023-11-06 22:44:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:11,722 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2023-11-06 22:44:11,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:44:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2023-11-06 22:44:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-06 22:44:11,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:11,728 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:11,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:11,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:44:11,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:11,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:11,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1176209040, now seen corresponding path program 1 times [2023-11-06 22:44:11,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:44:11,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814269142] [2023-11-06 22:44:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:11,964 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 [2023-11-06 22:44:11,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:44:11,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:44:11,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:44:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:12,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:44:12,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:44:30,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:30,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:44:30,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814269142] [2023-11-06 22:44:30,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814269142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:30,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:30,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:44:30,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968915296] [2023-11-06 22:44:30,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:30,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:44:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:44:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:44:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:44:30,088 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:45:00,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:45:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:25,353 INFO L93 Difference]: Finished difference Result 159 states and 229 transitions. [2023-11-06 22:45:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:45:25,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 91 [2023-11-06 22:45:25,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:25,377 INFO L225 Difference]: With dead ends: 159 [2023-11-06 22:45:25,378 INFO L226 Difference]: Without dead ends: 157 [2023-11-06 22:45:25,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:45:25,381 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 155 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:25,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 355 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 225 Invalid, 1 Unknown, 0 Unchecked, 43.2s Time] [2023-11-06 22:45:25,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-06 22:45:25,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 92. [2023-11-06 22:45:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.278688524590164) internal successors, (78), 61 states have internal predecessors, (78), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-06 22:45:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 134 transitions. [2023-11-06 22:45:25,451 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 134 transitions. Word has length 91 [2023-11-06 22:45:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:25,454 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 134 transitions. [2023-11-06 22:45:25,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:45:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 134 transitions. [2023-11-06 22:45:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-06 22:45:25,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:25,459 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:25,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:45:25,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:45:25,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:25,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:25,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1956665124, now seen corresponding path program 1 times [2023-11-06 22:45:25,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:45:25,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666843722] [2023-11-06 22:45:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:25,682 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 [2023-11-06 22:45:25,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:45:25,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:45:25,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b82d9e0e-822b-45d9-9682-91c4147351ad/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:45:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:25,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:45:26,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-06 22:46:11,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:46:11,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:46:11,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666843722] [2023-11-06 22:46:11,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666843722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:11,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:46:11,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:46:11,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797565703] [2023-11-06 22:46:11,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:11,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:46:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:46:11,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:46:11,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:46:11,045 INFO L87 Difference]: Start difference. First operand 92 states and 134 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:46:39,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:47:07,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []