./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ --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 ad34237e996cd331563e8b065d0d5380e94c9435b4bac2fb1e22d28e3c8a5cb6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:38:22,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:38:22,861 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:38:22,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:38:22,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:38:22,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:38:22,897 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:38:22,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:38:22,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:38:22,900 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:38:22,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:38:22,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:38:22,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:38:22,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:38:22,903 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:38:22,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:38:22,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:38:22,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:38:22,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:38:22,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:38:22,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:38:22,908 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:38:22,908 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:38:22,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:38:22,909 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:38:22,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:38:22,925 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:38:22,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:38:22,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:38:22,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:38:22,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:38:22,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:38:22,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:38:22,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:38:22,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:38:22,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:38:22,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:38:22,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:38:22,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:38:22,930 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:38:22,931 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:38:22,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:38:22,932 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad34237e996cd331563e8b065d0d5380e94c9435b4bac2fb1e22d28e3c8a5cb6 [2023-11-23 21:38:23,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:38:23,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:38:23,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:38:23,303 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:38:23,303 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:38:23,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/combinations/gcd_1+newton_1_4.i [2023-11-23 21:38:26,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:38:26,745 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:38:26,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i [2023-11-23 21:38:26,781 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/data/52364a966/ed8f7abf9ad6496f8d04de7c42288aa5/FLAG2c487e83e [2023-11-23 21:38:26,797 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/data/52364a966/ed8f7abf9ad6496f8d04de7c42288aa5 [2023-11-23 21:38:26,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:38:26,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:38:26,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:38:26,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:38:26,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:38:26,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:38:26" (1/1) ... [2023-11-23 21:38:26,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4286bd4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:26, skipping insertion in model container [2023-11-23 21:38:26,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:38:26" (1/1) ... [2023-11-23 21:38:26,858 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:38:27,094 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[1226,1239] [2023-11-23 21:38:27,124 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[2786,2799] [2023-11-23 21:38:27,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:38:27,150 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:38:27,174 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[1226,1239] [2023-11-23 21:38:27,187 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[2786,2799] [2023-11-23 21:38:27,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:38:27,204 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:38:27,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27 WrapperNode [2023-11-23 21:38:27,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:38:27,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:38:27,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:38:27,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:38:27,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,250 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 89 [2023-11-23 21:38:27,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:38:27,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:38:27,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:38:27,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:38:27,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,274 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,286 INFO L189 HeapSplitter]: Split 10 memory accesses to 2 slices as follows [2, 8] [2023-11-23 21:38:27,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,287 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:38:27,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:38:27,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:38:27,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:38:27,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (1/1) ... [2023-11-23 21:38:27,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:38:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:38:27,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:38:27,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:38:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:38:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:38:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:38:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:38:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:38:27,467 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:38:27,470 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:38:27,685 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:38:27,720 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:38:27,720 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:38:27,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:38:27 BoogieIcfgContainer [2023-11-23 21:38:27,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:38:27,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:38:27,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:38:27,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:38:27,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:38:26" (1/3) ... [2023-11-23 21:38:27,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7ea56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:38:27, skipping insertion in model container [2023-11-23 21:38:27,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:27" (2/3) ... [2023-11-23 21:38:27,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7ea56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:38:27, skipping insertion in model container [2023-11-23 21:38:27,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:38:27" (3/3) ... [2023-11-23 21:38:27,730 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_4.i [2023-11-23 21:38:27,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:38:27,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:38:27,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:38:27,801 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;@22a52bf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:38:27,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:38:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 19 states have internal predecessors, (28), 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) [2023-11-23 21:38:27,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:38:27,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:38:27,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:38:27,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:38:27,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1037804606, now seen corresponding path program 1 times [2023-11-23 21:38:27,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:27,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7595884] [2023-11-23 21:38:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:27,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:27,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:38:28,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7595884] [2023-11-23 21:38:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7595884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:38:28,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:38:28,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:38:28,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20254829] [2023-11-23 21:38:28,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:38:28,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:38:28,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:38:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:38:28,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:38:28,051 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 19 states have internal predecessors, (28), 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) 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) [2023-11-23 21:38:28,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:38:28,080 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2023-11-23 21:38:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:38:28,083 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 [2023-11-23 21:38:28,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:38:28,092 INFO L225 Difference]: With dead ends: 33 [2023-11-23 21:38:28,092 INFO L226 Difference]: Without dead ends: 15 [2023-11-23 21:38:28,095 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 [2023-11-23 21:38:28,099 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:38:28,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:38:28,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-23 21:38:28,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-23 21:38:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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) [2023-11-23 21:38:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-23 21:38:28,128 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2023-11-23 21:38:28,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:38:28,129 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-23 21:38:28,129 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) [2023-11-23 21:38:28,129 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 21:38:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:38:28,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:38:28,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:38:28,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:38:28,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:38:28,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:28,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1037745024, now seen corresponding path program 1 times [2023-11-23 21:38:28,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:38:28,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984996332] [2023-11-23 21:38:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:28,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:38:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:38:28,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:38:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:38:28,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:38:28,190 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:38:28,192 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-23 21:38:28,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-23 21:38:28,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:38:28,198 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 21:38:28,202 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:38:28,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:38:28 BoogieIcfgContainer [2023-11-23 21:38:28,222 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:38:28,223 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:38:28,223 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:38:28,223 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:38:28,224 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:38:27" (3/4) ... [2023-11-23 21:38:28,226 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:38:28,227 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:38:28,228 INFO L158 Benchmark]: Toolchain (without parser) took 1427.03ms. Allocated memory is still 207.6MB. Free memory was 177.8MB in the beginning and 142.1MB in the end (delta: 35.7MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2023-11-23 21:38:28,229 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory was 106.5MB in the beginning and 106.4MB in the end (delta: 73.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:38:28,229 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.08ms. Allocated memory is still 207.6MB. Free memory was 177.6MB in the beginning and 169.5MB in the end (delta: 8.2MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2023-11-23 21:38:28,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.79ms. Allocated memory is still 207.6MB. Free memory was 169.5MB in the beginning and 167.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:38:28,231 INFO L158 Benchmark]: Boogie Preprocessor took 48.99ms. Allocated memory is still 207.6MB. Free memory was 167.4MB in the beginning and 165.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:38:28,231 INFO L158 Benchmark]: RCFGBuilder took 417.39ms. Allocated memory is still 207.6MB. Free memory was 165.3MB in the beginning and 167.3MB in the end (delta: -2.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:38:28,232 INFO L158 Benchmark]: TraceAbstraction took 498.95ms. Allocated memory is still 207.6MB. Free memory was 166.1MB in the beginning and 142.1MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:38:28,232 INFO L158 Benchmark]: Witness Printer took 4.60ms. Allocated memory is still 207.6MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:38:28,236 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory was 106.5MB in the beginning and 106.4MB in the end (delta: 73.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.08ms. Allocated memory is still 207.6MB. Free memory was 177.6MB in the beginning and 169.5MB in the end (delta: 8.2MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.79ms. Allocated memory is still 207.6MB. Free memory was 169.5MB in the beginning and 167.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.99ms. Allocated memory is still 207.6MB. Free memory was 167.4MB in the beginning and 165.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.39ms. Allocated memory is still 207.6MB. Free memory was 165.3MB in the beginning and 167.3MB in the end (delta: -2.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 498.95ms. Allocated memory is still 207.6MB. Free memory was 166.1MB in the beginning and 142.1MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.60ms. Allocated memory is still 207.6MB. Free memory is still 142.1MB. 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: 102]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) [L102] 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 1 procedures, 20 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, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 6 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=20occurred 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, 0.1s 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 [2023-11-23 21:38:28,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ --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 ad34237e996cd331563e8b065d0d5380e94c9435b4bac2fb1e22d28e3c8a5cb6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:38:31,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:38:31,213 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-23 21:38:31,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:38:31,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:38:31,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:38:31,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:38:31,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:38:31,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:38:31,282 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:38:31,283 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:38:31,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:38:31,284 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:38:31,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:38:31,287 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:38:31,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:38:31,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:38:31,289 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:38:31,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:38:31,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:38:31,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:38:31,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:38:31,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:38:31,292 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:38:31,292 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:38:31,293 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:38:31,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:38:31,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:38:31,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:38:31,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:38:31,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:38:31,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:38:31,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:38:31,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:38:31,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:38:31,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:38:31,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:38:31,299 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 21:38:31,299 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:38:31,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:38:31,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:38:31,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:38:31,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:38:31,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:38:31,301 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 21:38:31,318 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad34237e996cd331563e8b065d0d5380e94c9435b4bac2fb1e22d28e3c8a5cb6 [2023-11-23 21:38:31,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:38:31,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:38:31,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:38:31,735 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:38:31,739 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:38:31,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/combinations/gcd_1+newton_1_4.i [2023-11-23 21:38:35,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:38:35,455 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:38:35,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i [2023-11-23 21:38:35,466 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/data/a99980d79/97641459bcfa4cf69a0c0974fc7c6349/FLAG486e766e9 [2023-11-23 21:38:35,483 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/data/a99980d79/97641459bcfa4cf69a0c0974fc7c6349 [2023-11-23 21:38:35,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:38:35,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:38:35,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:38:35,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:38:35,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:38:35,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:35,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7761367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35, skipping insertion in model container [2023-11-23 21:38:35,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:35,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:38:35,734 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[1226,1239] [2023-11-23 21:38:35,783 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[2786,2799] [2023-11-23 21:38:35,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:38:35,812 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:38:35,829 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[1226,1239] [2023-11-23 21:38:35,845 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_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/sv-benchmarks/c/combinations/gcd_1+newton_1_4.i[2786,2799] [2023-11-23 21:38:35,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:38:35,876 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:38:35,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35 WrapperNode [2023-11-23 21:38:35,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:38:35,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:38:35,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:38:35,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:38:35,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:35,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:35,957 INFO L138 Inliner]: procedures = 28, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 84 [2023-11-23 21:38:35,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:38:35,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:38:35,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:38:35,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:38:35,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:35,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:35,994 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:36,023 INFO L189 HeapSplitter]: Split 10 memory accesses to 2 slices as follows [2, 8] [2023-11-23 21:38:36,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:36,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:36,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:36,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:36,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:36,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:36,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:38:36,066 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:38:36,066 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:38:36,066 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:38:36,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (1/1) ... [2023-11-23 21:38:36,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:38:36,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:38:36,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:38:36,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:38:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:38:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-23 21:38:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-23 21:38:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:38:36,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:38:36,328 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:38:36,331 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:38:41,450 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:38:41,515 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:38:41,515 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:38:41,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:38:41 BoogieIcfgContainer [2023-11-23 21:38:41,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:38:41,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:38:41,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:38:41,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:38:41,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:38:35" (1/3) ... [2023-11-23 21:38:41,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452e45d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:38:41, skipping insertion in model container [2023-11-23 21:38:41,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:38:35" (2/3) ... [2023-11-23 21:38:41,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452e45d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:38:41, skipping insertion in model container [2023-11-23 21:38:41,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:38:41" (3/3) ... [2023-11-23 21:38:41,541 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_4.i [2023-11-23 21:38:41,567 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:38:41,568 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:38:41,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:38:41,640 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;@3757a5b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:38:41,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:38:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 19 states have internal predecessors, (28), 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) [2023-11-23 21:38:41,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:38:41,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:38:41,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:38:41,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:38:41,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:41,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1037804606, now seen corresponding path program 1 times [2023-11-23 21:38:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:38:41,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128639847] [2023-11-23 21:38:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:41,670 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 [2023-11-23 21:38:41,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:38:41,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:38:41,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:38:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:38:42,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:38:42,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:38:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:38:42,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:38:42,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:38:42,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128639847] [2023-11-23 21:38:42,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128639847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:38:42,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:38:42,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:38:42,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779041536] [2023-11-23 21:38:42,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:38:42,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:38:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:38:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:38:42,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:38:42,787 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 19 states have internal predecessors, (28), 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) 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) [2023-11-23 21:38:45,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:38:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:38:45,659 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2023-11-23 21:38:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:38:45,662 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 [2023-11-23 21:38:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:38:45,669 INFO L225 Difference]: With dead ends: 33 [2023-11-23 21:38:45,669 INFO L226 Difference]: Without dead ends: 15 [2023-11-23 21:38:45,671 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 [2023-11-23 21:38:45,675 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:38:45,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 21:38:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-23 21:38:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-23 21:38:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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) [2023-11-23 21:38:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-23 21:38:45,713 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2023-11-23 21:38:45,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:38:45,713 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-23 21:38:45,714 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) [2023-11-23 21:38:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 21:38:45,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:38:45,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:38:45,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:38:45,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:38:45,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:38:45,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:38:45,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:38:45,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1037745024, now seen corresponding path program 1 times [2023-11-23 21:38:45,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:38:45,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152854166] [2023-11-23 21:38:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:38:45,939 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 [2023-11-23 21:38:45,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:38:45,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:38:45,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5fac4fb-a333-403a-af60-9fa86b8c9e7f/bin/uautomizer-verify-zZY32mL2XJ/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