./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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 5d7e41890311b17b4172246b2c6ff0c305b3b8a9717c6f0cb798c28922acd89f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:22:37,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:22:37,439 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:22:37,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:22:37,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:22:37,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:22:37,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:22:37,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:22:37,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:22:37,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:22:37,469 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:22:37,470 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:22:37,470 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:22:37,471 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:22:37,471 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:22:37,472 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:22:37,472 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:22:37,473 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:22:37,473 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:22:37,474 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:22:37,475 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:22:37,475 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:22:37,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:22:37,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:22:37,477 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:22:37,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:22:37,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:22:37,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:22:37,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:22:37,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:22:37,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:22:37,480 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:22:37,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:22:37,480 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:22:37,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:22:37,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:22:37,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:22:37,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:22:37,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:22:37,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:22:37,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:22:37,482 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:22:37,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:22:37,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:22:37,483 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:22:37,483 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:22:37,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:22:37,483 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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d7e41890311b17b4172246b2c6ff0c305b3b8a9717c6f0cb798c28922acd89f [2023-12-02 17:22:37,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:22:37,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:22:37,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:22:37,721 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:22:37,721 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:22:37,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.i [2023-12-02 17:22:40,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:22:40,628 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:22:40,628 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.i [2023-12-02 17:22:40,636 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/data/dd5e9fbfc/a0fe08657986463a941ee2d28becdc95/FLAG860a3d232 [2023-12-02 17:22:40,647 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/data/dd5e9fbfc/a0fe08657986463a941ee2d28becdc95 [2023-12-02 17:22:40,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:22:40,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:22:40,653 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:22:40,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:22:40,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:22:40,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7211f230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40, skipping insertion in model container [2023-12-02 17:22:40,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,684 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:22:40,809 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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.i[915,928] [2023-12-02 17:22:40,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:22:40,856 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:22:40,866 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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.i[915,928] [2023-12-02 17:22:40,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:22:40,896 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:22:40,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40 WrapperNode [2023-12-02 17:22:40,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:22:40,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:22:40,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:22:40,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:22:40,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,941 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 122 [2023-12-02 17:22:40,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:22:40,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:22:40,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:22:40,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:22:40,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,971 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:22:40,972 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:22:40,972 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:22:40,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:22:40,973 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (1/1) ... [2023-12-02 17:22:40,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:22:40,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:22:41,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:22:41,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:22:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:22:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:22:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:22:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:22:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:22:41,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:22:41,123 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:22:41,125 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:22:41,340 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:22:41,467 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:22:41,467 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:22:41,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:22:41 BoogieIcfgContainer [2023-12-02 17:22:41,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:22:41,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:22:41,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:22:41,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:22:41,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:22:40" (1/3) ... [2023-12-02 17:22:41,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cc8cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:22:41, skipping insertion in model container [2023-12-02 17:22:41,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:40" (2/3) ... [2023-12-02 17:22:41,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cc8cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:22:41, skipping insertion in model container [2023-12-02 17:22:41,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:22:41" (3/3) ... [2023-12-02 17:22:41,478 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-45.i [2023-12-02 17:22:41,496 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:22:41,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:22:41,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:22:41,552 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;@4b35cc02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:22:41,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:22:41,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 17:22:41,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 17:22:41,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:22:41,567 INFO L195 NwaCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:22:41,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:22:41,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:22:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1281555060, now seen corresponding path program 1 times [2023-12-02 17:22:41,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:22:41,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860176334] [2023-12-02 17:22:41,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:22:41,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:22:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:22:42,045 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:22:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:22:42,258 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 17:22:42,260 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:22:42,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:22:42,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:22:42,267 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 17:22:42,271 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:22:42,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:22:42 BoogieIcfgContainer [2023-12-02 17:22:42,327 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:22:42,327 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:22:42,327 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:22:42,328 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:22:42,328 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:22:41" (3/4) ... [2023-12-02 17:22:42,330 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:22:42,331 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:22:42,333 INFO L158 Benchmark]: Toolchain (without parser) took 1681.58ms. Allocated memory is still 144.7MB. Free memory was 94.3MB in the beginning and 77.1MB in the end (delta: 17.2MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-12-02 17:22:42,333 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:22:42,334 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.23ms. Allocated memory is still 144.7MB. Free memory was 93.9MB in the beginning and 81.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 17:22:42,334 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.31ms. Allocated memory is still 144.7MB. Free memory was 81.6MB in the beginning and 79.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:22:42,335 INFO L158 Benchmark]: Boogie Preprocessor took 28.53ms. Allocated memory is still 144.7MB. Free memory was 79.3MB in the beginning and 78.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:22:42,335 INFO L158 Benchmark]: RCFGBuilder took 497.36ms. Allocated memory is still 144.7MB. Free memory was 78.0MB in the beginning and 108.2MB in the end (delta: -30.2MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2023-12-02 17:22:42,336 INFO L158 Benchmark]: TraceAbstraction took 855.05ms. Allocated memory is still 144.7MB. Free memory was 107.6MB in the beginning and 77.1MB in the end (delta: 30.4MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2023-12-02 17:22:42,336 INFO L158 Benchmark]: Witness Printer took 4.16ms. Allocated memory is still 144.7MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:22:42,340 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.23ms. Allocated memory is still 144.7MB. Free memory was 93.9MB in the beginning and 81.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.31ms. Allocated memory is still 144.7MB. Free memory was 81.6MB in the beginning and 79.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.53ms. Allocated memory is still 144.7MB. Free memory was 79.3MB in the beginning and 78.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.36ms. Allocated memory is still 144.7MB. Free memory was 78.0MB in the beginning and 108.2MB in the end (delta: -30.2MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * TraceAbstraction took 855.05ms. Allocated memory is still 144.7MB. Free memory was 107.6MB in the beginning and 77.1MB in the end (delta: 30.4MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * Witness Printer took 4.16ms. Allocated memory is still 144.7MB. Free memory is still 77.1MB. 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 someBinaryDOUBLEComparisonOperation at line 93, overapproximation of someBinaryArithmeticDOUBLEoperation at line 53. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 999999.2; [L23] double var_1_6 = 0.0; [L24] double var_1_7 = 5.9; [L25] double var_1_8 = 255.6; [L26] unsigned long int var_1_9 = 4; [L27] unsigned char var_1_10 = 0; [L28] unsigned long int var_1_11 = 1142722175; [L29] unsigned long int var_1_12 = 1231257437; [L30] signed char var_1_13 = -10; [L31] signed char var_1_14 = 100; [L32] signed char var_1_15 = 4; [L33] signed char var_1_16 = 64; [L34] signed char var_1_17 = 1; [L35] signed char var_1_18 = -8; [L36] unsigned char var_1_19 = 4; [L97] isInitial = 1 [L98] FCALL initially() [L99] int k_loop; [L100] k_loop = 0 VAL [isInitial=1, k_loop=0, var_1_10=0, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_6=0, var_1_7=59/10, var_1_8=1278/5, var_1_9=4] [L100] COND TRUE k_loop < 1 [L101] FCALL updateLastVariables() [L102] CALL updateVariables() [L59] var_1_6 = __VERIFIER_nondet_double() [L60] CALL assume_abort_if_not((var_1_6 >= 4611686.018427382800e+12F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854765600e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_7=59/10, var_1_8=1278/5, var_1_9=4] [L20] COND FALSE !(!cond) [L60] RET assume_abort_if_not((var_1_6 >= 4611686.018427382800e+12F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854765600e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=0, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_7=59/10, var_1_8=1278/5, var_1_9=4] [L61] var_1_7 = __VERIFIER_nondet_double() [L62] CALL assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 4611686.018427382800e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_8=1278/5, var_1_9=4] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 4611686.018427382800e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=0, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_8=1278/5, var_1_9=4] [L63] var_1_8 = __VERIFIER_nondet_double() [L64] CALL assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854765600e+12F && var_1_8 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not((var_1_8 >= 0.0F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854765600e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=0, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L65] var_1_10 = __VERIFIER_nondet_uchar() [L66] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L67] CALL assume_abort_if_not(var_1_10 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_10 <= 1) VAL [isInitial=1, var_1_10=0, var_1_11=1142722175, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L68] var_1_11 = __VERIFIER_nondet_ulong() [L69] CALL assume_abort_if_not(var_1_11 >= 1073741823) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_11 >= 1073741823) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L70] CALL assume_abort_if_not(var_1_11 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_11 <= 2147483647) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1231257437, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L71] var_1_12 = __VERIFIER_nondet_ulong() [L72] CALL assume_abort_if_not(var_1_12 >= 1073741824) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_12 >= 1073741824) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L73] CALL assume_abort_if_not(var_1_12 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_12 <= 2147483647) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=100, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L74] var_1_14 = __VERIFIER_nondet_char() [L75] CALL assume_abort_if_not(var_1_14 >= -1) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_14 >= -1) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L76] CALL assume_abort_if_not(var_1_14 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_14 <= 126) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=4, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L77] var_1_15 = __VERIFIER_nondet_char() [L78] CALL assume_abort_if_not(var_1_15 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_15 >= 0) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L79] CALL assume_abort_if_not(var_1_15 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_15 <= 126) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=64, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L80] var_1_16 = __VERIFIER_nondet_char() [L81] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L82] CALL assume_abort_if_not(var_1_16 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_16 <= 126) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=1, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L83] var_1_17 = __VERIFIER_nondet_char() [L84] CALL assume_abort_if_not(var_1_17 >= -63) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=-63, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_17 >= -63) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=-63, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L85] CALL assume_abort_if_not(var_1_17 <= 63) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=-63, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_17 <= 63) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=-63, var_1_18=-8, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L86] var_1_18 = __VERIFIER_nondet_char() [L87] CALL assume_abort_if_not(var_1_18 >= -63) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=-63, var_1_18=53, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_18 >= -63) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=-63, var_1_18=53, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L88] CALL assume_abort_if_not(var_1_18 <= 63) VAL [\old(cond)=1, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=-63, var_1_18=53, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_18 <= 63) VAL [isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=-63, var_1_18=53, var_1_19=4, var_1_1=4999996/5, var_1_9=4] [L102] RET updateVariables() [L103] CALL step() [L40] COND FALSE !(\read(var_1_10)) [L43] var_1_19 = var_1_16 [L44] unsigned long int stepLocal_0 = ((((var_1_19 + var_1_9)) < (var_1_9)) ? ((var_1_19 + var_1_9)) : (var_1_9)); [L45] COND FALSE !(\read(var_1_10)) [L48] COND FALSE !(var_1_12 < stepLocal_0) [L52] COND TRUE (var_1_9 / 32) < (((((var_1_13 + var_1_9)) < (var_1_19)) ? ((var_1_13 + var_1_9)) : (var_1_19))) [L53] var_1_1 = ((var_1_6 - var_1_7) - var_1_8) [L103] RET step() [L104] CALL, EXPR property() [L93-L94] return (((((var_1_9 / 32) < (((((var_1_13 + var_1_9)) < (var_1_19)) ? ((var_1_13 + var_1_9)) : (var_1_19)))) ? (var_1_1 == ((double) ((var_1_6 - var_1_7) - var_1_8))) : (var_1_1 == ((double) var_1_6))) && (var_1_10 ? (var_1_9 == ((unsigned long int) ((var_1_11 + var_1_12) - 5u))) : 1)) && (var_1_10 ? (var_1_13 == ((signed char) (var_1_14 - ((((((((var_1_15) < (var_1_16)) ? (var_1_15) : (var_1_16)))) < (50)) ? (((((var_1_15) < (var_1_16)) ? (var_1_15) : (var_1_16)))) : (50)))))) : ((var_1_12 < (((((var_1_19 + var_1_9)) < (var_1_9)) ? ((var_1_19 + var_1_9)) : (var_1_9)))) ? (var_1_13 == ((signed char) (var_1_17 + var_1_18))) : 1))) && (var_1_19 == ((unsigned char) var_1_16)) ; [L104] RET, EXPR property() [L104] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=-63, var_1_18=53, var_1_19=9, var_1_1=1231257442, var_1_6=1231257442, var_1_9=4] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=0, var_1_11=1073741823, var_1_12=1073741824, var_1_13=-10, var_1_14=-1, var_1_15=9, var_1_16=9, var_1_17=-63, var_1_18=53, var_1_19=9, var_1_1=1231257442, var_1_6=1231257442, var_1_9=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 19, 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=39occurred 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, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 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 17:22:42,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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 5d7e41890311b17b4172246b2c6ff0c305b3b8a9717c6f0cb798c28922acd89f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:22:44,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:22:44,312 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 17:22:44,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:22:44,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:22:44,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:22:44,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:22:44,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:22:44,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:22:44,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:22:44,347 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:22:44,348 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:22:44,348 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:22:44,349 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:22:44,349 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:22:44,350 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:22:44,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:22:44,351 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:22:44,352 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:22:44,352 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:22:44,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:22:44,354 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:22:44,354 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:22:44,355 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:22:44,355 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:22:44,356 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:22:44,356 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:22:44,356 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:22:44,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:22:44,357 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:22:44,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:22:44,358 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:22:44,358 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:22:44,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:22:44,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:22:44,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:22:44,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:22:44,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:22:44,359 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:22:44,360 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:22:44,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:22:44,360 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:22:44,361 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:22:44,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:22:44,361 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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d7e41890311b17b4172246b2c6ff0c305b3b8a9717c6f0cb798c28922acd89f [2023-12-02 17:22:44,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:22:44,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:22:44,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:22:44,663 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:22:44,663 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:22:44,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.i [2023-12-02 17:22:47,405 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:22:47,611 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:22:47,612 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.i [2023-12-02 17:22:47,621 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/data/421abdd2d/1f4411b827a44e1e925e4413e69e166b/FLAGbb9d916e6 [2023-12-02 17:22:47,636 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/data/421abdd2d/1f4411b827a44e1e925e4413e69e166b [2023-12-02 17:22:47,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:22:47,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:22:47,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:22:47,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:22:47,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:22:47,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:47,649 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 05:22:47, skipping insertion in model container [2023-12-02 17:22:47,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:47,675 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:22:47,826 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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.i[915,928] [2023-12-02 17:22:47,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:22:47,885 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:22:47,898 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_15ae383f-2595-4ee1-a4f7-a0a69eb07651/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-45.i[915,928] [2023-12-02 17:22:47,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:22:47,940 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:22:47,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47 WrapperNode [2023-12-02 17:22:47,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:22:47,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:22:47,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:22:47,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:22:47,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:47,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:47,987 INFO L138 Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 117 [2023-12-02 17:22:47,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:22:47,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:22:47,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:22:47,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:22:47,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:47,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:48,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:48,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:48,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:48,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:48,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:48,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:48,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:22:48,026 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:22:48,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:22:48,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:22:48,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (1/1) ... [2023-12-02 17:22:48,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:22:48,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:22:48,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:22:48,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:22:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:22:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:22:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:22:48,091 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:22:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:22:48,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:22:48,178 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:22:48,180 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:22:48,641 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:22:48,731 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:22:48,732 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:22:48,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:22:48 BoogieIcfgContainer [2023-12-02 17:22:48,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:22:48,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:22:48,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:22:48,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:22:48,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:22:47" (1/3) ... [2023-12-02 17:22:48,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0f4199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:22:48, skipping insertion in model container [2023-12-02 17:22:48,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:22:47" (2/3) ... [2023-12-02 17:22:48,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0f4199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:22:48, skipping insertion in model container [2023-12-02 17:22:48,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:22:48" (3/3) ... [2023-12-02 17:22:48,742 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-45.i [2023-12-02 17:22:48,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:22:48,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:22:48,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:22:48,817 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;@58224b30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:22:48,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:22:48,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 17:22:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 17:22:48,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:22:48,836 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:22:48,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:22:48,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:22:48,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1661675722, now seen corresponding path program 1 times [2023-12-02 17:22:48,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:22:48,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398281237] [2023-12-02 17:22:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:22:48,856 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 17:22:48,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:22:48,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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 17:22:48,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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 17:22:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:22:49,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 17:22:49,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:22:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-12-02 17:22:49,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:22:49,196 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:22:49,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398281237] [2023-12-02 17:22:49,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398281237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:22:49,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:22:49,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:22:49,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678545519] [2023-12-02 17:22:49,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:22:49,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 17:22:49,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:22:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 17:22:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:22:49,238 INFO L87 Difference]: Start difference. First operand has 48 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 17:22:50,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 17:22:50,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:22:50,318 INFO L93 Difference]: Finished difference Result 95 states and 164 transitions. [2023-12-02 17:22:50,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 17:22:50,320 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 115 [2023-12-02 17:22:50,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:22:50,326 INFO L225 Difference]: With dead ends: 95 [2023-12-02 17:22:50,326 INFO L226 Difference]: Without dead ends: 46 [2023-12-02 17:22:50,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 114 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 17:22:50,332 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:22:50,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:22:50,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-02 17:22:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-12-02 17:22:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 17:22:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 68 transitions. [2023-12-02 17:22:50,376 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 68 transitions. Word has length 115 [2023-12-02 17:22:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:22:50,377 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 68 transitions. [2023-12-02 17:22:50,377 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 17:22:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 68 transitions. [2023-12-02 17:22:50,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 17:22:50,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:22:50,381 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:22:50,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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 17:22:50,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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 17:22:50,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:22:50,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:22:50,582 INFO L85 PathProgramCache]: Analyzing trace with hash -575866160, now seen corresponding path program 1 times [2023-12-02 17:22:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:22:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825816368] [2023-12-02 17:22:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:22:50,584 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 17:22:50,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:22:50,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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 17:22:50,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ae383f-2595-4ee1-a4f7-a0a69eb07651/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 17:22:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:22:50,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 17:22:50,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:23:48,141 WARN L293 SmtUtils]: Spent 15.57s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)