./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:06:39,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:06:39,643 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:06:39,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:06:39,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:06:39,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:06:39,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:06:39,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:06:39,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:06:39,673 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:06:39,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:06:39,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:06:39,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:06:39,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:06:39,676 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:06:39,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:06:39,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:06:39,677 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:06:39,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:06:39,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:06:39,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:06:39,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:06:39,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:06:39,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:06:39,680 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:06:39,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:06:39,681 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:06:39,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:06:39,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:06:39,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:06:39,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:06:39,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:06:39,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:06:39,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:06:39,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:06:39,684 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:06:39,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:06:39,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:06:39,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:06:39,684 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:06:39,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:06:39,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:06:39,685 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 [2023-11-29 02:06:39,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:06:39,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:06:39,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:06:39,939 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:06:39,939 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:06:39,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2023-11-29 02:06:42,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:06:42,855 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:06:42,856 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2023-11-29 02:06:42,863 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/data/81bd20d3e/ad77a5b34ef34b9bbe136996b954edf9/FLAG68beb8ef4 [2023-11-29 02:06:42,875 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/data/81bd20d3e/ad77a5b34ef34b9bbe136996b954edf9 [2023-11-29 02:06:42,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:06:42,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:06:42,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:06:42,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:06:42,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:06:42,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:06:42" (1/1) ... [2023-11-29 02:06:42,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa3b033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:42, skipping insertion in model container [2023-11-29 02:06:42,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:06:42" (1/1) ... [2023-11-29 02:06:42,911 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:06:43,043 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_1eab1bde-a114-41cb-ba13-a66a85d91c99/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[1224,1237] [2023-11-29 02:06:43,065 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_1eab1bde-a114-41cb-ba13-a66a85d91c99/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[2806,2819] [2023-11-29 02:06:43,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:06:43,077 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:06:43,091 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_1eab1bde-a114-41cb-ba13-a66a85d91c99/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[1224,1237] [2023-11-29 02:06:43,102 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_1eab1bde-a114-41cb-ba13-a66a85d91c99/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[2806,2819] [2023-11-29 02:06:43,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:06:43,119 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:06:43,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43 WrapperNode [2023-11-29 02:06:43,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:06:43,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:06:43,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:06:43,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:06:43,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,159 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2023-11-29 02:06:43,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:06:43,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:06:43,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:06:43,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:06:43,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,188 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-29 02:06:43,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:06:43,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:06:43,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:06:43,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:06:43,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (1/1) ... [2023-11-29 02:06:43,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:06:43,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:43,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:06:43,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:06:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:06:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:06:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:06:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:06:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:06:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 02:06:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 02:06:43,355 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:06:43,358 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:06:43,509 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:06:43,539 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:06:43,540 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:06:43,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:06:43 BoogieIcfgContainer [2023-11-29 02:06:43,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:06:43,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:06:43,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:06:43,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:06:43,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:06:42" (1/3) ... [2023-11-29 02:06:43,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514ce923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:06:43, skipping insertion in model container [2023-11-29 02:06:43,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:43" (2/3) ... [2023-11-29 02:06:43,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514ce923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:06:43, skipping insertion in model container [2023-11-29 02:06:43,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:06:43" (3/3) ... [2023-11-29 02:06:43,551 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_7.i [2023-11-29 02:06:43,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:06:43,571 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 02:06:43,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:06:43,632 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78c4382c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:06:43,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 02:06:43,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 20 states have (on average 1.6) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:06:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 02:06:43,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:06:43,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:06:43,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:06:43,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:43,650 INFO L85 PathProgramCache]: Analyzing trace with hash -610259614, now seen corresponding path program 1 times [2023-11-29 02:06:43,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:43,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137247038] [2023-11-29 02:06:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:43,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:43,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137247038] [2023-11-29 02:06:43,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137247038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:06:43,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:06:43,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:06:43,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675381692] [2023-11-29 02:06:43,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:06:43,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:06:43,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:43,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:06:43,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:06:43,828 INFO L87 Difference]: Start difference. First operand has 27 states, 20 states have (on average 1.6) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:06:43,858 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2023-11-29 02:06:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:06:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 02:06:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:06:43,866 INFO L225 Difference]: With dead ends: 46 [2023-11-29 02:06:43,866 INFO L226 Difference]: Without dead ends: 23 [2023-11-29 02:06:43,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:06:43,871 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:06:43,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:06:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-29 02:06:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-29 02:06:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 02:06:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-11-29 02:06:43,904 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 6 [2023-11-29 02:06:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:06:43,905 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-11-29 02:06:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:06:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-11-29 02:06:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 02:06:43,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:06:43,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:06:43,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:06:43,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:06:43,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -610200032, now seen corresponding path program 1 times [2023-11-29 02:06:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:43,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722928397] [2023-11-29 02:06:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:06:43,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:06:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:06:43,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:06:43,962 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 02:06:43,963 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-29 02:06:43,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-29 02:06:43,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:06:43,969 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 02:06:43,972 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 02:06:43,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:06:43 BoogieIcfgContainer [2023-11-29 02:06:43,989 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 02:06:43,989 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:06:43,990 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:06:43,990 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:06:43,990 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:06:43" (3/4) ... [2023-11-29 02:06:43,992 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 02:06:43,993 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:06:43,994 INFO L158 Benchmark]: Toolchain (without parser) took 1115.00ms. Allocated memory is still 161.5MB. Free memory was 114.9MB in the beginning and 60.3MB in the end (delta: 54.6MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2023-11-29 02:06:43,994 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 161.5MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:06:43,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.34ms. Allocated memory is still 161.5MB. Free memory was 114.9MB in the beginning and 103.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 02:06:43,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.83ms. Allocated memory is still 161.5MB. Free memory was 103.0MB in the beginning and 101.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:06:43,996 INFO L158 Benchmark]: Boogie Preprocessor took 42.81ms. Allocated memory is still 161.5MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:06:43,997 INFO L158 Benchmark]: RCFGBuilder took 336.47ms. Allocated memory is still 161.5MB. Free memory was 99.5MB in the beginning and 86.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 02:06:43,997 INFO L158 Benchmark]: TraceAbstraction took 445.39ms. Allocated memory is still 161.5MB. Free memory was 85.6MB in the beginning and 60.8MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-29 02:06:43,998 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 161.5MB. Free memory was 60.8MB in the beginning and 60.3MB in the end (delta: 495.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:06:44,001 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 161.5MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.34ms. Allocated memory is still 161.5MB. Free memory was 114.9MB in the beginning and 103.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.83ms. Allocated memory is still 161.5MB. Free memory was 103.0MB in the beginning and 101.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.81ms. Allocated memory is still 161.5MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 336.47ms. Allocated memory is still 161.5MB. Free memory was 99.5MB in the beginning and 86.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 445.39ms. Allocated memory is still 161.5MB. Free memory was 85.6MB in the beginning and 60.8MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 161.5MB. Free memory was 60.8MB in the beginning and 60.3MB in the end (delta: 495.9kB). 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: 109]: 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 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 87. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) [L109] reach_error() - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 29 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2023-11-29 02:06:44,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:06:46,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:06:46,107 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 02:06:46,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:06:46,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:06:46,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:06:46,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:06:46,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:06:46,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:06:46,147 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:06:46,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:06:46,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:06:46,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:06:46,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:06:46,150 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:06:46,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:06:46,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:06:46,152 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:06:46,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:06:46,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:06:46,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:06:46,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:06:46,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:06:46,155 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 02:06:46,155 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 02:06:46,156 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 02:06:46,156 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:06:46,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:06:46,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:06:46,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:06:46,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:06:46,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:06:46,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:06:46,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:06:46,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:06:46,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:06:46,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:06:46,160 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 02:06:46,160 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 02:06:46,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:06:46,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:06:46,161 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:06:46,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:06:46,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:06:46,161 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 02:06:46,162 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bba7076723828a76d549dab99f9f19216b374670dd0bb1f48d42a5f4a5ac3a7 [2023-11-29 02:06:46,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:06:46,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:06:46,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:06:46,489 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:06:46,490 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:06:46,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2023-11-29 02:06:49,283 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:06:49,442 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:06:49,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i [2023-11-29 02:06:49,451 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/data/f698353a8/116a1084addc434f9cd00562610ff624/FLAG0612e14c8 [2023-11-29 02:06:49,464 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/data/f698353a8/116a1084addc434f9cd00562610ff624 [2023-11-29 02:06:49,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:06:49,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:06:49,469 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:06:49,469 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:06:49,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:06:49,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4339e926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49, skipping insertion in model container [2023-11-29 02:06:49,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:06:49,648 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_1eab1bde-a114-41cb-ba13-a66a85d91c99/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[1224,1237] [2023-11-29 02:06:49,672 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_1eab1bde-a114-41cb-ba13-a66a85d91c99/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[2806,2819] [2023-11-29 02:06:49,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:06:49,688 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:06:49,701 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_1eab1bde-a114-41cb-ba13-a66a85d91c99/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[1224,1237] [2023-11-29 02:06:49,712 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_1eab1bde-a114-41cb-ba13-a66a85d91c99/sv-benchmarks/c/combinations/gcd_4+newton_1_7.i[2806,2819] [2023-11-29 02:06:49,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:06:49,729 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:06:49,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49 WrapperNode [2023-11-29 02:06:49,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:06:49,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:06:49,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:06:49,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:06:49,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,769 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 79 [2023-11-29 02:06:49,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:06:49,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:06:49,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:06:49,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:06:49,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,784 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,796 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-29 02:06:49,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:06:49,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:06:49,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:06:49,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:06:49,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (1/1) ... [2023-11-29 02:06:49,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:06:49,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:49,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:06:49,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:06:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:06:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 02:06:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 02:06:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:06:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:06:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 02:06:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 02:06:49,949 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:06:49,951 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:07:00,432 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:07:00,462 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:07:00,462 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:07:00,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:07:00 BoogieIcfgContainer [2023-11-29 02:07:00,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:07:00,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:07:00,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:07:00,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:07:00,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:06:49" (1/3) ... [2023-11-29 02:07:00,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e85302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:07:00, skipping insertion in model container [2023-11-29 02:07:00,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:06:49" (2/3) ... [2023-11-29 02:07:00,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e85302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:07:00, skipping insertion in model container [2023-11-29 02:07:00,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:07:00" (3/3) ... [2023-11-29 02:07:00,472 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_7.i [2023-11-29 02:07:00,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:07:00,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 02:07:00,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:07:00,544 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70e9957b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:07:00,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 02:07:00,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 20 states have (on average 1.6) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:07:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 02:07:00,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:07:00,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:07:00,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:07:00,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:00,560 INFO L85 PathProgramCache]: Analyzing trace with hash -610259614, now seen corresponding path program 1 times [2023-11-29 02:07:00,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:07:00,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003972746] [2023-11-29 02:07:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:00,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:07:00,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:07:00,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:07:00,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 02:07:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:01,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:07:01,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:01,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:01,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:07:01,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003972746] [2023-11-29 02:07:01,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003972746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:01,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:01,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:07:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686699970] [2023-11-29 02:07:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:01,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:07:01,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:07:01,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:07:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:07:01,476 INFO L87 Difference]: Start difference. First operand has 27 states, 20 states have (on average 1.6) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:07,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 02:07:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:07:08,396 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2023-11-29 02:07:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:07:08,398 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 02:07:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:07:08,413 INFO L225 Difference]: With dead ends: 46 [2023-11-29 02:07:08,413 INFO L226 Difference]: Without dead ends: 23 [2023-11-29 02:07:08,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:07:08,419 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:07:08,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2023-11-29 02:07:08,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-29 02:07:08,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-29 02:07:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 02:07:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-11-29 02:07:08,462 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 6 [2023-11-29 02:07:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:07:08,462 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-11-29 02:07:08,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-11-29 02:07:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 02:07:08,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:07:08,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:07:08,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:07:08,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:07:08,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:07:08,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash -610200032, now seen corresponding path program 1 times [2023-11-29 02:07:08,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:07:08,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854686703] [2023-11-29 02:07:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:08,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:07:08,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:07:08,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:07:08,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 02:07:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:07:14,897 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:07:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:07:27,251 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 02:07:27,252 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 02:07:27,254 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-29 02:07:27,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-29 02:07:27,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 02:07:27,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:07:27,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 02:07:27,462 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 02:07:27,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:07:27 BoogieIcfgContainer [2023-11-29 02:07:27,479 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 02:07:27,479 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:07:27,480 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:07:27,480 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:07:27,480 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:07:00" (3/4) ... [2023-11-29 02:07:27,481 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-29 02:07:27,510 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 02:07:27,511 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:07:27,511 INFO L158 Benchmark]: Toolchain (without parser) took 38043.46ms. Allocated memory is still 90.2MB. Free memory was 60.8MB in the beginning and 55.8MB in the end (delta: 5.0MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. [2023-11-29 02:07:27,512 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 33.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:07:27,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.37ms. Allocated memory is still 90.2MB. Free memory was 60.5MB in the beginning and 48.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 02:07:27,512 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.12ms. Allocated memory is still 90.2MB. Free memory was 48.2MB in the beginning and 46.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:07:27,513 INFO L158 Benchmark]: Boogie Preprocessor took 45.63ms. Allocated memory is still 90.2MB. Free memory was 46.5MB in the beginning and 44.0MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 02:07:27,513 INFO L158 Benchmark]: RCFGBuilder took 10645.87ms. Allocated memory is still 90.2MB. Free memory was 43.8MB in the beginning and 60.3MB in the end (delta: -16.6MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2023-11-29 02:07:27,513 INFO L158 Benchmark]: TraceAbstraction took 27013.26ms. Allocated memory is still 90.2MB. Free memory was 59.5MB in the beginning and 57.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:07:27,513 INFO L158 Benchmark]: Witness Printer took 31.21ms. Allocated memory is still 90.2MB. Free memory was 57.3MB in the beginning and 55.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:07:27,515 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 33.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.37ms. Allocated memory is still 90.2MB. Free memory was 60.5MB in the beginning and 48.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.12ms. Allocated memory is still 90.2MB. Free memory was 48.2MB in the beginning and 46.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.63ms. Allocated memory is still 90.2MB. Free memory was 46.5MB in the beginning and 44.0MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 10645.87ms. Allocated memory is still 90.2MB. Free memory was 43.8MB in the beginning and 60.3MB in the end (delta: -16.6MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * TraceAbstraction took 27013.26ms. Allocated memory is still 90.2MB. Free memory was 59.5MB in the beginning and 57.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 31.21ms. Allocated memory is still 90.2MB. Free memory was 57.3MB in the beginning and 55.8MB in the end (delta: 1.5MB). 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 - CounterExampleResult [Line: 109]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=-0.7187499403953552, x=0.15571779012680054] [L109] reach_error() VAL [IN=-0.7187499403953552, x=0.15571779012680054] - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 26.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 29 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.9s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be incorrect! [2023-11-29 02:07:27,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eab1bde-a114-41cb-ba13-a66a85d91c99/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE