./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.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_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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_51ca054d-c098-4c86-9e2f-73970a644d9f/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 2ce1ea73380d9456a1f136ae7fb40364a65fd1608042e66fc50d954be964842d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:26:37,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:26:37,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:26:37,164 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:26:37,165 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:26:37,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:26:37,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:26:37,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:26:37,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:26:37,218 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:26:37,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:26:37,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:26:37,221 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:26:37,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:26:37,223 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:26:37,224 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:26:37,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:26:37,225 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:26:37,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:26:37,226 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:26:37,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:26:37,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:26:37,227 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:26:37,227 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:26:37,228 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:26:37,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:26:37,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:26:37,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:26:37,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:26:37,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:26:37,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:26:37,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:26:37,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:26:37,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:26:37,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:26:37,234 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:26:37,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:26:37,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:26:37,234 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:26:37,235 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_51ca054d-c098-4c86-9e2f-73970a644d9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ce1ea73380d9456a1f136ae7fb40364a65fd1608042e66fc50d954be964842d [2023-11-06 22:26:37,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:26:37,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:26:37,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:26:37,559 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:26:37,560 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:26:37,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.i [2023-11-06 22:26:40,800 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:26:41,104 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:26:41,105 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.i [2023-11-06 22:26:41,120 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/data/b2460746c/d5783f475a404109a3d04d99dfdc0bc2/FLAG3ba299f69 [2023-11-06 22:26:41,141 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/data/b2460746c/d5783f475a404109a3d04d99dfdc0bc2 [2023-11-06 22:26:41,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:26:41,151 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:26:41,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:41,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:26:41,159 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:26:41,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19030dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41, skipping insertion in model container [2023-11-06 22:26:41,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,201 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:26:41,400 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_51ca054d-c098-4c86-9e2f-73970a644d9f/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.i[915,928] [2023-11-06 22:26:41,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:41,457 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:26:41,474 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_51ca054d-c098-4c86-9e2f-73970a644d9f/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.i[915,928] [2023-11-06 22:26:41,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:41,514 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:26:41,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41 WrapperNode [2023-11-06 22:26:41,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:41,517 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:41,517 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:26:41,517 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:26:41,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,566 INFO L138 Inliner]: procedures = 26, calls = 19, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 79 [2023-11-06 22:26:41,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:41,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:26:41,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:26:41,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:26:41,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:26:41,601 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:26:41,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:26:41,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:26:41,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (1/1) ... [2023-11-06 22:26:41,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:26:41,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:41,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:41,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:26:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:26:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:26:41,681 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:26:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:26:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:26:41,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:26:41,754 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:26:41,756 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:26:41,965 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:26:41,983 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:26:41,986 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:26:41,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:41 BoogieIcfgContainer [2023-11-06 22:26:41,990 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:26:41,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:26:41,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:26:42,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:26:42,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:41" (1/3) ... [2023-11-06 22:26:42,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710b872f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:42, skipping insertion in model container [2023-11-06 22:26:42,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:41" (2/3) ... [2023-11-06 22:26:42,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710b872f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:42, skipping insertion in model container [2023-11-06 22:26:42,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:41" (3/3) ... [2023-11-06 22:26:42,007 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-20.i [2023-11-06 22:26:42,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:26:42,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:26:42,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:26:42,123 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;@70d98f1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:26:42,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:26:42,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:26:42,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:26:42,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:42,143 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:42,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:42,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:42,154 INFO L85 PathProgramCache]: Analyzing trace with hash 933759244, now seen corresponding path program 1 times [2023-11-06 22:26:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:42,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830508232] [2023-11-06 22:26:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:42,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:26:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:26:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:26:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:26:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 22:26:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:26:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 22:26:42,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:42,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830508232] [2023-11-06 22:26:42,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830508232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:42,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:42,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:42,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904523369] [2023-11-06 22:26:42,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:42,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:26:42,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:26:42,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:26:42,603 INFO L87 Difference]: Start difference. First operand has 36 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:26:42,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:42,645 INFO L93 Difference]: Finished difference Result 65 states and 100 transitions. [2023-11-06 22:26:42,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:26:42,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-11-06 22:26:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:42,657 INFO L225 Difference]: With dead ends: 65 [2023-11-06 22:26:42,657 INFO L226 Difference]: Without dead ends: 32 [2023-11-06 22:26:42,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 22:26:42,669 INFO L413 NwaCegarLoop]: 43 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, 43 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 22:26:42,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:26:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-06 22:26:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-06 22:26:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:26:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-11-06 22:26:42,722 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 49 [2023-11-06 22:26:42,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:42,725 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-11-06 22:26:42,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:26:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-11-06 22:26:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:26:42,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:42,733 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:42,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:26:42,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:42,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash 407835988, now seen corresponding path program 1 times [2023-11-06 22:26:42,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:42,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171092608] [2023-11-06 22:26:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:42,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:26:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:26:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:26:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:26:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 22:26:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:26:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 22:26:42,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:42,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171092608] [2023-11-06 22:26:42,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171092608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:42,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:42,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:26:42,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142112437] [2023-11-06 22:26:42,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:42,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:42,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:42,935 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-06 22:26:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:42,978 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2023-11-06 22:26:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:42,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 49 [2023-11-06 22:26:42,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:42,980 INFO L225 Difference]: With dead ends: 72 [2023-11-06 22:26:42,980 INFO L226 Difference]: Without dead ends: 43 [2023-11-06 22:26:42,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:42,983 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 15 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:42,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 69 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:26:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-06 22:26:42,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2023-11-06 22:26:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:26:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2023-11-06 22:26:42,992 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 49 [2023-11-06 22:26:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:42,994 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2023-11-06 22:26:42,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-06 22:26:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2023-11-06 22:26:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:26:42,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:42,996 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:42,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:26:42,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:42,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash -401510638, now seen corresponding path program 1 times [2023-11-06 22:26:42,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:42,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202092156] [2023-11-06 22:26:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:42,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:43,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:43,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:43,174 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:26:43,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:26:43,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:26:43,181 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:26:43,185 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:26:43,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:43 BoogieIcfgContainer [2023-11-06 22:26:43,243 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:26:43,243 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:26:43,243 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:26:43,244 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:26:43,244 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:41" (3/4) ... [2023-11-06 22:26:43,246 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:26:43,247 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:26:43,248 INFO L158 Benchmark]: Toolchain (without parser) took 2096.95ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 66.6MB in the end (delta: 30.8MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2023-11-06 22:26:43,249 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:26:43,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.19ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 85.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:26:43,250 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.96ms. Allocated memory is still 142.6MB. Free memory was 85.6MB in the beginning and 83.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:26:43,251 INFO L158 Benchmark]: Boogie Preprocessor took 33.23ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 82.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:26:43,251 INFO L158 Benchmark]: RCFGBuilder took 390.75ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 70.5MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:26:43,252 INFO L158 Benchmark]: TraceAbstraction took 1247.38ms. Allocated memory is still 142.6MB. Free memory was 69.9MB in the beginning and 66.6MB in the end (delta: 3.2MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2023-11-06 22:26:43,252 INFO L158 Benchmark]: Witness Printer took 4.43ms. Allocated memory is still 142.6MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:26:43,256 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.19ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 85.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.96ms. Allocated memory is still 142.6MB. Free memory was 85.6MB in the beginning and 83.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.23ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 82.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 390.75ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 70.5MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1247.38ms. Allocated memory is still 142.6MB. Free memory was 69.9MB in the beginning and 66.6MB in the end (delta: 3.2MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 4.43ms. Allocated memory is still 142.6MB. Free memory is still 66.6MB. 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 75, overapproximation of someBinaryDOUBLEComparisonOperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 0.6; [L23] unsigned char var_1_2 = 0; [L24] float var_1_3 = 0.0; [L25] float var_1_4 = 2.95; [L26] float var_1_5 = 8.5; [L27] float var_1_6 = 999999999999.4; [L28] double var_1_7 = 10.2; [L29] double var_1_8 = 32.7; [L30] double var_1_9 = 32.75; [L31] double last_1_var_1_8 = 32.7; VAL [isInitial=0, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L79] isInitial = 1 [L80] FCALL initially() [L81] COND TRUE 1 [L82] CALL updateLastVariables() [L72] last_1_var_1_8 = var_1_8 VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L82] RET updateLastVariables() [L83] CALL updateVariables() [L59] var_1_2 = __VERIFIER_nondet_uchar() [L60] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L60] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L61] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L61] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=0, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L62] var_1_3 = __VERIFIER_nondet_float() [L63] CALL assume_abort_if_not((var_1_3 >= 4611686.018427382800e+12F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854765600e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L63] RET assume_abort_if_not((var_1_3 >= 4611686.018427382800e+12F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854765600e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=59/20, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L64] var_1_4 = __VERIFIER_nondet_float() [L65] CALL assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L65] RET assume_abort_if_not((var_1_4 >= 0.0F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=17/2, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L66] var_1_5 = __VERIFIER_nondet_float() [L67] CALL assume_abort_if_not((var_1_5 >= 0.0F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L67] RET assume_abort_if_not((var_1_5 >= 0.0F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 9223372.036854765600e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=4999999999997/5, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L68] var_1_6 = __VERIFIER_nondet_float() [L69] CALL assume_abort_if_not((var_1_6 >= -461168.6018427382800e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L69] RET assume_abort_if_not((var_1_6 >= -461168.6018427382800e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_1=3/5, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L83] RET updateVariables() [L84] CALL step() [L35] COND FALSE !(\read(var_1_2)) [L38] var_1_1 = (var_1_4 + var_1_6) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L40] COND FALSE !(\read(var_1_2)) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L43] COND FALSE !(\read(var_1_2)) VAL [isInitial=1, last_1_var_1_8=327/10, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=327/10, var_1_9=131/4] [L50] COND TRUE var_1_7 <= var_1_5 [L51] var_1_8 = var_1_6 VAL [isInitial=1, last_1_var_1_8=327/10, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=1000000000004, var_1_9=131/4] [L54] COND TRUE var_1_4 != (var_1_3 - var_1_5) [L55] var_1_9 = var_1_6 VAL [isInitial=1, last_1_var_1_8=327/10, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=1000000000004, var_1_9=1000000000004] [L84] RET step() [L85] CALL, EXPR property() [L75-L76] return (((var_1_2 ? (var_1_1 == ((float) ((var_1_3 - var_1_4) - var_1_5))) : (var_1_1 == ((float) (var_1_4 + var_1_6)))) && (var_1_2 ? (var_1_7 == ((double) ((((((var_1_3 - 255.719)) < (var_1_5)) ? ((var_1_3 - 255.719)) : (var_1_5))) - 2.3))) : 1)) && (var_1_2 ? ((var_1_7 >= ((((last_1_var_1_8) > (var_1_6)) ? (last_1_var_1_8) : (var_1_6)))) ? (var_1_8 == ((double) (var_1_5 - var_1_3))) : (var_1_8 == ((double) var_1_4))) : ((var_1_7 <= var_1_5) ? (var_1_8 == ((double) var_1_6)) : 1))) && ((var_1_4 != (var_1_3 - var_1_5)) ? (var_1_9 == ((double) var_1_6)) : 1) ; VAL [\result=0, isInitial=1, last_1_var_1_8=327/10, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=1000000000004, var_1_9=1000000000004] [L85] RET, EXPR property() [L85] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_8=327/10, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=1000000000004, var_1_9=1000000000004] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_8=327/10, var_1_2=0, var_1_3=1000000000006, var_1_4=1000000000005, var_1_5=1000000000007, var_1_6=1000000000004, var_1_7=51/5, var_1_8=1000000000004, var_1_9=1000000000004] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 112 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 83 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 120/120 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 22:26:43,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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_51ca054d-c098-4c86-9e2f-73970a644d9f/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 2ce1ea73380d9456a1f136ae7fb40364a65fd1608042e66fc50d954be964842d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:26:45,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:26:46,105 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 22:26:46,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:26:46,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:26:46,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:26:46,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:26:46,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:26:46,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:26:46,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:26:46,171 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:26:46,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:26:46,172 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:26:46,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:26:46,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:26:46,175 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:26:46,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:26:46,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:26:46,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:26:46,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:26:46,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:26:46,179 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:26:46,179 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:26:46,180 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:26:46,180 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:26:46,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:26:46,181 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:26:46,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:26:46,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:26:46,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:26:46,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:26:46,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:26:46,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:26:46,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:26:46,186 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:26:46,187 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:26:46,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:26:46,187 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:26:46,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:26:46,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:26:46,190 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:26:46,190 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:26:46,191 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_51ca054d-c098-4c86-9e2f-73970a644d9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ce1ea73380d9456a1f136ae7fb40364a65fd1608042e66fc50d954be964842d [2023-11-06 22:26:46,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:26:46,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:26:46,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:26:46,699 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:26:46,700 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:26:46,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.i [2023-11-06 22:26:50,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:26:50,339 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:26:50,341 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.i [2023-11-06 22:26:50,353 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/data/9a5c51c16/0cd36b0ec1d24ceea6100b0b19c71afc/FLAG79a730c0b [2023-11-06 22:26:50,372 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/data/9a5c51c16/0cd36b0ec1d24ceea6100b0b19c71afc [2023-11-06 22:26:50,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:26:50,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:26:50,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:50,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:26:50,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:26:50,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35edcc8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50, skipping insertion in model container [2023-11-06 22:26:50,395 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,433 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:26:50,631 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_51ca054d-c098-4c86-9e2f-73970a644d9f/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.i[915,928] [2023-11-06 22:26:50,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:50,719 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:26:50,736 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_51ca054d-c098-4c86-9e2f-73970a644d9f/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-20.i[915,928] [2023-11-06 22:26:50,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:50,793 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:26:50,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50 WrapperNode [2023-11-06 22:26:50,794 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:50,795 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:50,795 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:26:50,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:26:50,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,885 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 79 [2023-11-06 22:26:50,885 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:50,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:26:50,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:26:50,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:26:50,898 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:26:50,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:26:50,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:26:50,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:26:50,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (1/1) ... [2023-11-06 22:26:50,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:26:51,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:51,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:51,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:26:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:26:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:26:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:26:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:26:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:26:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:26:51,178 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:26:51,181 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:26:57,363 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:26:57,370 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:26:57,371 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:26:57,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:57 BoogieIcfgContainer [2023-11-06 22:26:57,373 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:26:57,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:26:57,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:26:57,380 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:26:57,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:50" (1/3) ... [2023-11-06 22:26:57,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8d3db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:57, skipping insertion in model container [2023-11-06 22:26:57,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:50" (2/3) ... [2023-11-06 22:26:57,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8d3db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:57, skipping insertion in model container [2023-11-06 22:26:57,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:57" (3/3) ... [2023-11-06 22:26:57,384 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-20.i [2023-11-06 22:26:57,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:26:57,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:26:57,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:26:57,466 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;@29ab4b6a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:26:57,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:26:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:26:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:26:57,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:57,485 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:57,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:57,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:57,499 INFO L85 PathProgramCache]: Analyzing trace with hash 933759244, now seen corresponding path program 1 times [2023-11-06 22:26:57,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:57,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585330191] [2023-11-06 22:26:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:57,519 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 22:26:57,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:57,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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 22:26:57,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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 22:26:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:58,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:26:58,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:26:58,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:58,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:58,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585330191] [2023-11-06 22:26:58,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585330191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:58,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:58,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:58,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130412657] [2023-11-06 22:26:58,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:58,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:26:58,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:58,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:26:58,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:26:58,408 INFO L87 Difference]: Start difference. First operand has 36 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:26:58,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:58,446 INFO L93 Difference]: Finished difference Result 65 states and 100 transitions. [2023-11-06 22:26:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:26:58,449 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-11-06 22:26:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:58,457 INFO L225 Difference]: With dead ends: 65 [2023-11-06 22:26:58,457 INFO L226 Difference]: Without dead ends: 32 [2023-11-06 22:26:58,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 48 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 22:26:58,467 INFO L413 NwaCegarLoop]: 43 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, 43 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 22:26:58,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:26:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-06 22:26:58,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-06 22:26:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:26:58,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-11-06 22:26:58,514 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 49 [2023-11-06 22:26:58,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:58,515 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-11-06 22:26:58,515 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), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:26:58,515 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-11-06 22:26:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:26:58,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:58,519 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:58,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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)] Ended with exit code 0 [2023-11-06 22:26:58,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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 22:26:58,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:58,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:58,745 INFO L85 PathProgramCache]: Analyzing trace with hash 407835988, now seen corresponding path program 1 times [2023-11-06 22:26:58,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:58,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608177782] [2023-11-06 22:26:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:58,747 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 22:26:58,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:58,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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 22:26:58,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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 22:26:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:59,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:26:59,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 22:26:59,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:59,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:59,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608177782] [2023-11-06 22:26:59,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608177782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:59,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:59,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:26:59,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604293442] [2023-11-06 22:26:59,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:59,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:59,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:59,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:59,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:59,389 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-06 22:27:00,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:03,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:05,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:05,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:05,225 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2023-11-06 22:27:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:05,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 49 [2023-11-06 22:27:05,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:05,276 INFO L225 Difference]: With dead ends: 72 [2023-11-06 22:27:05,277 INFO L226 Difference]: Without dead ends: 43 [2023-11-06 22:27:05,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:05,279 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 15 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:05,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 69 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2023-11-06 22:27:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-06 22:27:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2023-11-06 22:27:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 22:27:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2023-11-06 22:27:05,288 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 49 [2023-11-06 22:27:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:05,290 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2023-11-06 22:27:05,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-06 22:27:05,291 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2023-11-06 22:27:05,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:27:05,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:05,293 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:05,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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 22:27:05,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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 22:27:05,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:27:05,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash -401510638, now seen corresponding path program 1 times [2023-11-06 22:27:05,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:27:05,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79978561] [2023-11-06 22:27:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:05,510 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 22:27:05,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:27:05,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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 22:27:05,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ca054d-c098-4c86-9e2f-73970a644d9f/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 22:27:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:06,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:27:06,018 INFO L285 TraceCheckSpWp]: Computing forward predicates...