./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78cb2a64d376bc24725ded4a0eb9b996b458809ee92f4059e872faf6b1604d1d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:26:24,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:26:25,034 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:26:25,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:26:25,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:26:25,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:26:25,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:26:25,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:26:25,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:26:25,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:26:25,066 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:26:25,067 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:26:25,067 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:26:25,068 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:26:25,068 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:26:25,069 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:26:25,069 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:26:25,070 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:26:25,070 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:26:25,071 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:26:25,071 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:26:25,072 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:26:25,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:26:25,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:26:25,074 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:26:25,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:26:25,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:26:25,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:26:25,076 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:26:25,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:26:25,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:26:25,077 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:26:25,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:26:25,077 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:26:25,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:26:25,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:26:25,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:26:25,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:26:25,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:26:25,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:26:25,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:26:25,079 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:26:25,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:26:25,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:26:25,079 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:26:25,080 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:26:25,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:26:25,080 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78cb2a64d376bc24725ded4a0eb9b996b458809ee92f4059e872faf6b1604d1d [2023-12-02 15:26:25,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:26:25,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:26:25,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:26:25,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:26:25,317 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:26:25,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i [2023-12-02 15:26:28,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:26:28,282 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:26:28,282 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i [2023-12-02 15:26:28,290 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/data/1d3a3e6c3/858ffd1dcbde4d699c72a694f3c0feae/FLAG6227df1fa [2023-12-02 15:26:28,302 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/data/1d3a3e6c3/858ffd1dcbde4d699c72a694f3c0feae [2023-12-02 15:26:28,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:26:28,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:26:28,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:26:28,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:26:28,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:26:28,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd32801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28, skipping insertion in model container [2023-12-02 15:26:28,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,337 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:26:28,459 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_d673a7e4-1341-4903-9680-e030f9ccc82a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i[915,928] [2023-12-02 15:26:28,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:26:28,517 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:26:28,528 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_d673a7e4-1341-4903-9680-e030f9ccc82a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i[915,928] [2023-12-02 15:26:28,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:26:28,570 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:26:28,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28 WrapperNode [2023-12-02 15:26:28,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:26:28,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:26:28,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:26:28,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:26:28,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,620 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2023-12-02 15:26:28,621 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:26:28,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:26:28,622 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:26:28,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:26:28,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,635 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:26:28,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:26:28,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:26:28,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:26:28,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (1/1) ... [2023-12-02 15:26:28,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:26:28,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:28,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:26:28,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:26:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:26:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:26:28,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:26:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:26:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:26:28,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:26:28,803 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:26:28,805 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:26:29,043 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:26:29,160 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:26:29,161 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:26:29,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:26:29 BoogieIcfgContainer [2023-12-02 15:26:29,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:26:29,165 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:26:29,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:26:29,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:26:29,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:26:28" (1/3) ... [2023-12-02 15:26:29,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb79ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:26:29, skipping insertion in model container [2023-12-02 15:26:29,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:28" (2/3) ... [2023-12-02 15:26:29,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb79ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:26:29, skipping insertion in model container [2023-12-02 15:26:29,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:26:29" (3/3) ... [2023-12-02 15:26:29,171 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-75.i [2023-12-02 15:26:29,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:26:29,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:26:29,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:26:29,245 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42dbf285, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:26:29,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:26:29,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 15:26:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 15:26:29,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:29,260 INFO L195 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:29,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:26:29,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:29,265 INFO L85 PathProgramCache]: Analyzing trace with hash -531702462, now seen corresponding path program 1 times [2023-12-02 15:26:29,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905743882] [2023-12-02 15:26:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:29,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:29,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:26:29,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782114914] [2023-12-02 15:26:29,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:29,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:29,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:29,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:29,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:26:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:26:29,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:26:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:26:29,718 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:26:29,720 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:26:29,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:26:29,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:26:29,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:29,927 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 15:26:29,930 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:26:29,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:26:29 BoogieIcfgContainer [2023-12-02 15:26:29,980 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:26:29,981 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:26:29,981 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:26:29,981 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:26:29,981 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:26:29" (3/4) ... [2023-12-02 15:26:29,983 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:26:29,985 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:26:29,986 INFO L158 Benchmark]: Toolchain (without parser) took 1679.61ms. Allocated memory is still 182.5MB. Free memory was 138.3MB in the beginning and 119.7MB in the end (delta: 18.6MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2023-12-02 15:26:29,986 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory was 65.6MB in the beginning and 65.5MB in the end (delta: 126.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:26:29,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.83ms. Allocated memory is still 182.5MB. Free memory was 137.9MB in the beginning and 125.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 15:26:29,987 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.45ms. Allocated memory is still 182.5MB. Free memory was 125.3MB in the beginning and 121.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:26:29,988 INFO L158 Benchmark]: Boogie Preprocessor took 35.52ms. Allocated memory is still 182.5MB. Free memory was 121.9MB in the beginning and 119.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:26:29,989 INFO L158 Benchmark]: RCFGBuilder took 504.69ms. Allocated memory is still 182.5MB. Free memory was 119.8MB in the beginning and 149.8MB in the end (delta: -30.0MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2023-12-02 15:26:29,989 INFO L158 Benchmark]: TraceAbstraction took 814.93ms. Allocated memory is still 182.5MB. Free memory was 149.1MB in the beginning and 119.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-12-02 15:26:29,990 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 182.5MB. Free memory is still 119.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:26:29,994 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory was 65.6MB in the beginning and 65.5MB in the end (delta: 126.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.83ms. Allocated memory is still 182.5MB. Free memory was 137.9MB in the beginning and 125.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.45ms. Allocated memory is still 182.5MB. Free memory was 125.3MB in the beginning and 121.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.52ms. Allocated memory is still 182.5MB. Free memory was 121.9MB in the beginning and 119.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 504.69ms. Allocated memory is still 182.5MB. Free memory was 119.8MB in the beginning and 149.8MB in the end (delta: -30.0MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. * TraceAbstraction took 814.93ms. Allocated memory is still 182.5MB. Free memory was 149.1MB in the beginning and 119.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 182.5MB. Free memory is still 119.7MB. 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 51, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 51. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 32; [L23] unsigned char var_1_7 = 128; [L24] unsigned char var_1_8 = 64; [L25] unsigned char var_1_9 = 100; [L26] unsigned char var_1_10 = 1; [L27] float var_1_11 = -0.6; [L28] unsigned char var_1_12 = 1; [L29] double var_1_13 = 999999999999999.2; [L30] float var_1_14 = 50.25; [L31] float var_1_15 = 15.5; [L32] float var_1_16 = 128.5; [L33] unsigned char var_1_17 = 0; [L34] unsigned char last_1_var_1_17 = 0; [L89] isInitial = 1 [L90] FCALL initially() [L91] COND TRUE 1 [L92] CALL updateLastVariables() [L82] last_1_var_1_17 = var_1_17 [L92] RET updateLastVariables() [L93] CALL updateVariables() [L57] var_1_7 = __VERIFIER_nondet_uchar() [L58] CALL assume_abort_if_not(var_1_7 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=64, var_1_9=100] [L20] COND FALSE !(!cond) [L58] RET assume_abort_if_not(var_1_7 >= 127) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=64, var_1_9=100] [L59] CALL assume_abort_if_not(var_1_7 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=64, var_1_9=100] [L20] COND FALSE !(!cond) [L59] RET assume_abort_if_not(var_1_7 <= 254) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=64, var_1_9=100] [L60] var_1_8 = __VERIFIER_nondet_uchar() [L61] CALL assume_abort_if_not(var_1_8 >= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=100] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_8 >= 63) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=100] [L62] CALL assume_abort_if_not(var_1_8 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=100] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_8 <= 127) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=100] [L63] var_1_9 = __VERIFIER_nondet_uchar() [L64] CALL assume_abort_if_not(var_1_9 >= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_9 >= 63) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L65] CALL assume_abort_if_not(var_1_9 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_9 <= 127) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L66] var_1_10 = __VERIFIER_nondet_uchar() [L67] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, last_1_var_1_17=0, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L68] CALL assume_abort_if_not(var_1_10 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_10 <= 63) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L69] var_1_12 = __VERIFIER_nondet_uchar() [L70] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L71] CALL assume_abort_if_not(var_1_12 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_12 <= 1) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L72] var_1_13 = __VERIFIER_nondet_double() [L73] CALL assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L74] var_1_14 = __VERIFIER_nondet_float() [L75] CALL assume_abort_if_not((var_1_14 >= -461168.6018427382800e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 4611686.018427382800e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not((var_1_14 >= -461168.6018427382800e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 4611686.018427382800e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L76] var_1_15 = __VERIFIER_nondet_float() [L77] CALL assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L78] var_1_16 = __VERIFIER_nondet_float() [L79] CALL assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_17=0, var_1_1=32, var_1_7=254, var_1_8=63, var_1_9=63] [L93] RET updateVariables() [L94] CALL step() [L38] signed long int stepLocal_0 = (last_1_var_1_17 * last_1_var_1_17) * last_1_var_1_17; [L39] COND FALSE !(stepLocal_0 < ((((last_1_var_1_17) > (last_1_var_1_17)) ? (last_1_var_1_17) : (last_1_var_1_17)))) [L42] var_1_1 = var_1_8 [L44] unsigned char stepLocal_1 = var_1_1; [L45] COND TRUE stepLocal_1 >= var_1_1 [L46] var_1_17 = (((((var_1_7) < 0 ) ? -(var_1_7) : (var_1_7))) - (((((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10))) < 0 ) ? -((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10))) : ((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10)))))) [L50] COND FALSE !(var_1_12 || ((var_1_13 * 49.25) == 32.8)) [L53] var_1_11 = var_1_15 [L94] RET step() [L95] CALL, EXPR property() [L85-L86] return (((((last_1_var_1_17 * last_1_var_1_17) * last_1_var_1_17) < ((((last_1_var_1_17) > (last_1_var_1_17)) ? (last_1_var_1_17) : (last_1_var_1_17)))) ? (var_1_1 == ((unsigned char) (var_1_7 - (((((var_1_8) < (var_1_9)) ? (var_1_8) : (var_1_9))) - var_1_10)))) : (var_1_1 == ((unsigned char) var_1_8))) && ((var_1_12 || ((var_1_13 * 49.25) == 32.8)) ? (var_1_11 == ((float) (((((var_1_14 + var_1_15)) > (var_1_16)) ? ((var_1_14 + var_1_15)) : (var_1_16))))) : (var_1_11 == ((float) var_1_15)))) && ((var_1_1 >= var_1_1) ? (var_1_17 == ((unsigned char) (((((var_1_7) < 0 ) ? -(var_1_7) : (var_1_7))) - (((((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10))) < 0 ) ? -((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10))) : ((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10)))))))) : (var_1_17 == ((unsigned char) var_1_8))) ; [L95] RET, EXPR property() [L95] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_11=2, var_1_12=0, var_1_15=2, var_1_16=0, var_1_17=191, var_1_1=63, var_1_7=254, var_1_8=63, var_1_9=63] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_11=2, var_1_12=0, var_1_15=2, var_1_16=0, var_1_17=191, var_1_1=63, var_1_7=254, var_1_8=63, var_1_9=63] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 [2023-12-02 15:26:30,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78cb2a64d376bc24725ded4a0eb9b996b458809ee92f4059e872faf6b1604d1d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:26:31,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:26:32,031 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 15:26:32,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:26:32,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:26:32,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:26:32,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:26:32,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:26:32,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:26:32,065 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:26:32,066 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:26:32,066 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:26:32,067 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:26:32,067 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:26:32,068 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:26:32,068 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:26:32,069 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:26:32,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:26:32,070 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:26:32,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:26:32,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:26:32,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:26:32,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:26:32,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:26:32,076 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:26:32,077 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:26:32,077 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:26:32,077 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:26:32,078 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:26:32,078 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:26:32,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:26:32,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:26:32,079 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:26:32,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:26:32,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:26:32,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:26:32,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:26:32,080 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:26:32,080 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:26:32,081 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:26:32,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:26:32,081 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:26:32,081 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:26:32,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:26:32,082 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78cb2a64d376bc24725ded4a0eb9b996b458809ee92f4059e872faf6b1604d1d [2023-12-02 15:26:32,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:26:32,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:26:32,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:26:32,376 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:26:32,376 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:26:32,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i [2023-12-02 15:26:35,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:26:35,332 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:26:35,333 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i [2023-12-02 15:26:35,342 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/data/8041c2b38/de2c8e26df534874a9206a3c57747401/FLAG0afbfdcb4 [2023-12-02 15:26:35,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/data/8041c2b38/de2c8e26df534874a9206a3c57747401 [2023-12-02 15:26:35,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:26:35,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:26:35,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:26:35,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:26:35,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:26:35,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bd749e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35, skipping insertion in model container [2023-12-02 15:26:35,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:26:35,547 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_d673a7e4-1341-4903-9680-e030f9ccc82a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i[915,928] [2023-12-02 15:26:35,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:26:35,604 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:26:35,617 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_d673a7e4-1341-4903-9680-e030f9ccc82a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i[915,928] [2023-12-02 15:26:35,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:26:35,656 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:26:35,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35 WrapperNode [2023-12-02 15:26:35,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:26:35,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:26:35,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:26:35,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:26:35,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,702 INFO L138 Inliner]: procedures = 27, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2023-12-02 15:26:35,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:26:35,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:26:35,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:26:35,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:26:35,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,726 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,734 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:26:35,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:26:35,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:26:35,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:26:35,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (1/1) ... [2023-12-02 15:26:35,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:26:35,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:35,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:26:35,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:26:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:26:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:26:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:26:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:26:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:26:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:26:35,900 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:26:35,905 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:26:37,333 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:26:37,384 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:26:37,385 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:26:37,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:26:37 BoogieIcfgContainer [2023-12-02 15:26:37,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:26:37,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:26:37,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:26:37,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:26:37,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:26:35" (1/3) ... [2023-12-02 15:26:37,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3243449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:26:37, skipping insertion in model container [2023-12-02 15:26:37,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:26:35" (2/3) ... [2023-12-02 15:26:37,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3243449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:26:37, skipping insertion in model container [2023-12-02 15:26:37,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:26:37" (3/3) ... [2023-12-02 15:26:37,396 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-75.i [2023-12-02 15:26:37,415 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:26:37,416 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:26:37,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:26:37,469 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56aeac9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:26:37,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:26:37,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 15:26:37,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 15:26:37,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:37,482 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:37,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:26:37,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:37,487 INFO L85 PathProgramCache]: Analyzing trace with hash 452644599, now seen corresponding path program 1 times [2023-12-02 15:26:37,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:26:37,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000248215] [2023-12-02 15:26:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:37,502 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 [2023-12-02 15:26:37,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:26:37,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 15:26:37,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:26:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:37,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:26:37,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-02 15:26:37,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:26:37,846 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:26:37,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000248215] [2023-12-02 15:26:37,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000248215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:26:37,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:26:37,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:26:37,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100749565] [2023-12-02 15:26:37,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:26:37,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:26:37,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:26:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:26:37,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:26:37,885 INFO L87 Difference]: Start difference. First operand has 40 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 15:26:38,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:38,448 INFO L93 Difference]: Finished difference Result 77 states and 130 transitions. [2023-12-02 15:26:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:26:38,461 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2023-12-02 15:26:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:38,468 INFO L225 Difference]: With dead ends: 77 [2023-12-02 15:26:38,468 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 15:26:38,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:26:38,475 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:38,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:26:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 15:26:38,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-02 15:26:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 15:26:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2023-12-02 15:26:38,517 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 88 [2023-12-02 15:26:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:38,517 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2023-12-02 15:26:38,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 15:26:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2023-12-02 15:26:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 15:26:38,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:38,522 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:38,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:26:38,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:26:38,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:26:38,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:38,732 INFO L85 PathProgramCache]: Analyzing trace with hash 469163327, now seen corresponding path program 1 times [2023-12-02 15:26:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:26:38,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043380417] [2023-12-02 15:26:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:38,734 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 [2023-12-02 15:26:38,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:26:38,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 15:26:38,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:26:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:38,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:26:38,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-02 15:26:39,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:26:39,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:26:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043380417] [2023-12-02 15:26:39,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043380417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:26:39,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:26:39,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:26:39,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557252044] [2023-12-02 15:26:39,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:26:39,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:26:39,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:26:39,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:26:39,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:26:39,275 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 15:26:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:40,222 INFO L93 Difference]: Finished difference Result 113 states and 161 transitions. [2023-12-02 15:26:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:26:40,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 88 [2023-12-02 15:26:40,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:40,236 INFO L225 Difference]: With dead ends: 113 [2023-12-02 15:26:40,236 INFO L226 Difference]: Without dead ends: 76 [2023-12-02 15:26:40,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:26:40,238 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 32 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:40,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 161 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:26:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-02 15:26:40,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2023-12-02 15:26:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 15:26:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2023-12-02 15:26:40,261 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 88 [2023-12-02 15:26:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:40,262 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2023-12-02 15:26:40,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-02 15:26:40,262 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2023-12-02 15:26:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 15:26:40,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:40,264 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:40,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 15:26:40,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:26:40,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:26:40,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:40,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2050796607, now seen corresponding path program 1 times [2023-12-02 15:26:40,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:26:40,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457250471] [2023-12-02 15:26:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:40,467 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 [2023-12-02 15:26:40,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:26:40,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 15:26:40,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d673a7e4-1341-4903-9680-e030f9ccc82a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:26:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:40,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 15:26:40,729 INFO L285 TraceCheckSpWp]: Computing forward predicates...