./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_1_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c79b5b9c620a89b5ccbc8a9238defbac5dd93f8a16c11c7717d83a12d6f10e40 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:11:47,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:11:47,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:11:47,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:11:47,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:11:47,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:11:47,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:11:47,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:11:47,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:11:47,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:11:47,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:11:47,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:11:47,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:11:47,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:11:47,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:11:47,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:11:47,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:11:47,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:11:47,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:11:47,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:11:47,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:11:47,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:11:47,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:11:47,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:11:47,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:11:47,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:11:47,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:11:47,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:11:47,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:11:47,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:11:47,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:11:47,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:11:47,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:11:47,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:11:47,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:11:47,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:11:47,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:11:47,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:11:47,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:11:47,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:11:47,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:11:47,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:11:47,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:11:47,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:11:47,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:11:47,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:11:47,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:11:47,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:11:47,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:11:47,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:11:47,869 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:11:47,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:11:47,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:11:47,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:11:47,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:11:47,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:11:47,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:11:47,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:11:47,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:11:47,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:11:47,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:11:47,871 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:11:47,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:11:47,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:11:47,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:11:47,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:11:47,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:11:47,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:11:47,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:11:47,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:11:47,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:11:47,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:11:47,873 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:11:47,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:11:47,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:11:47,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:11:47,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c79b5b9c620a89b5ccbc8a9238defbac5dd93f8a16c11c7717d83a12d6f10e40 [2021-12-06 18:11:48,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:11:48,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:11:48,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:11:48,101 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:11:48,102 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:11:48,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/gcd_3+newton_1_8.i [2021-12-06 18:11:48,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/data/4cb3ff7c9/5fdfb95ca07b4f509263edc6cc84b74b/FLAGb0b3faa5c [2021-12-06 18:11:48,544 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:11:48,544 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/sv-benchmarks/c/combinations/gcd_3+newton_1_8.i [2021-12-06 18:11:48,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/data/4cb3ff7c9/5fdfb95ca07b4f509263edc6cc84b74b/FLAGb0b3faa5c [2021-12-06 18:11:48,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/data/4cb3ff7c9/5fdfb95ca07b4f509263edc6cc84b74b [2021-12-06 18:11:48,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:11:48,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:11:48,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:11:48,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:11:48,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:11:48,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91e0b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48, skipping insertion in model container [2021-12-06 18:11:48,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:11:48,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:11:48,699 WARN L230 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_891b3f26-96be-466b-bc0a-6fd297fe30f9/sv-benchmarks/c/combinations/gcd_3+newton_1_8.i[1226,1239] [2021-12-06 18:11:48,718 WARN L230 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_891b3f26-96be-466b-bc0a-6fd297fe30f9/sv-benchmarks/c/combinations/gcd_3+newton_1_8.i[2820,2833] [2021-12-06 18:11:48,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:11:48,726 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:11:48,734 WARN L230 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_891b3f26-96be-466b-bc0a-6fd297fe30f9/sv-benchmarks/c/combinations/gcd_3+newton_1_8.i[1226,1239] [2021-12-06 18:11:48,742 WARN L230 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_891b3f26-96be-466b-bc0a-6fd297fe30f9/sv-benchmarks/c/combinations/gcd_3+newton_1_8.i[2820,2833] [2021-12-06 18:11:48,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:11:48,753 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:11:48,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48 WrapperNode [2021-12-06 18:11:48,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:11:48,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:11:48,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:11:48,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:11:48,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,791 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-06 18:11:48,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:11:48,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:11:48,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:11:48,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:11:48,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:11:48,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:11:48,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:11:48,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:11:48,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (1/1) ... [2021-12-06 18:11:48,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:11:48,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:48,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:11:48,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:11:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:11:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:11:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:11:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:11:48,929 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:11:48,930 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:11:49,023 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:11:49,027 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:11:49,028 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:11:49,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:11:49 BoogieIcfgContainer [2021-12-06 18:11:49,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:11:49,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:11:49,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:11:49,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:11:49,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:11:48" (1/3) ... [2021-12-06 18:11:49,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa878a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:11:49, skipping insertion in model container [2021-12-06 18:11:49,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:48" (2/3) ... [2021-12-06 18:11:49,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa878a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:11:49, skipping insertion in model container [2021-12-06 18:11:49,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:11:49" (3/3) ... [2021-12-06 18:11:49,036 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_8.i [2021-12-06 18:11:49,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:11:49,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 18:11:49,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:11:49,085 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:11:49,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 18:11:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2021-12-06 18:11:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:11:49,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:49,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:49,100 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:49,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-06 18:11:49,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:49,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453307274] [2021-12-06 18:11:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:49,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:49,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:49,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453307274] [2021-12-06 18:11:49,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453307274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:49,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:49,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:11:49,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85066692] [2021-12-06 18:11:49,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:49,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:11:49,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:11:49,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:11:49,251 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-06 18:11:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:49,266 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-06 18:11:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:11:49,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-12-06 18:11:49,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:49,276 INFO L225 Difference]: With dead ends: 47 [2021-12-06 18:11:49,276 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 18:11:49,279 INFO L932 BasicCegarLoop]: 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 [2021-12-06 18:11:49,283 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:49,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:11:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 18:11:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-06 18:11:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-12-06 18:11:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-06 18:11:49,306 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-06 18:11:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:49,307 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-06 18:11:49,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-06 18:11:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-06 18:11:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:11:49,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:49,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:49,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:11:49,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:49,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:49,309 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-06 18:11:49,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:49,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89826502] [2021-12-06 18:11:49,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:49,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:11:49,331 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:11:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:11:49,357 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:11:49,357 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:11:49,359 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 18:11:49,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 18:11:49,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:11:49,363 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 18:11:49,365 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:11:49,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:11:49 BoogieIcfgContainer [2021-12-06 18:11:49,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:11:49,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:11:49,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:11:49,389 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:11:49,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:11:49" (3/4) ... [2021-12-06 18:11:49,392 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 18:11:49,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:11:49,393 INFO L158 Benchmark]: Toolchain (without parser) took 831.64ms. Allocated memory is still 107.0MB. Free memory was 71.0MB in the beginning and 83.5MB in the end (delta: -12.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:11:49,393 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:11:49,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.65ms. Allocated memory is still 107.0MB. Free memory was 70.7MB in the beginning and 82.0MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:11:49,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.55ms. Allocated memory is still 107.0MB. Free memory was 82.0MB in the beginning and 80.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:11:49,394 INFO L158 Benchmark]: Boogie Preprocessor took 22.54ms. Allocated memory is still 107.0MB. Free memory was 80.4MB in the beginning and 79.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:11:49,395 INFO L158 Benchmark]: RCFGBuilder took 213.38ms. Allocated memory is still 107.0MB. Free memory was 79.0MB in the beginning and 68.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:11:49,395 INFO L158 Benchmark]: TraceAbstraction took 358.51ms. Allocated memory is still 107.0MB. Free memory was 68.2MB in the beginning and 84.1MB in the end (delta: -15.9MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2021-12-06 18:11:49,396 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 107.0MB. Free memory was 84.1MB in the beginning and 83.5MB in the end (delta: 619.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:11:49,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.65ms. Allocated memory is still 107.0MB. Free memory was 70.7MB in the beginning and 82.0MB in the end (delta: -11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.55ms. Allocated memory is still 107.0MB. Free memory was 82.0MB in the beginning and 80.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.54ms. Allocated memory is still 107.0MB. Free memory was 80.4MB in the beginning and 79.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 213.38ms. Allocated memory is still 107.0MB. Free memory was 79.0MB in the beginning and 68.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 358.51ms. Allocated memory is still 107.0MB. Free memory was 68.2MB in the beginning and 84.1MB in the end (delta: -15.9MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 107.0MB. Free memory was 84.1MB in the beginning and 83.5MB in the end (delta: 619.2kB). 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 call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [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; VAL [\old(x)=49, x=49] [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; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2021-12-06 18:11:49,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c79b5b9c620a89b5ccbc8a9238defbac5dd93f8a16c11c7717d83a12d6f10e40 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:11:51,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:11:51,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:11:51,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:11:51,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:11:51,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:11:51,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:11:51,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:11:51,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:11:51,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:11:51,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:11:51,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:11:51,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:11:51,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:11:51,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:11:51,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:11:51,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:11:51,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:11:51,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:11:51,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:11:51,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:11:51,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:11:51,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:11:51,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:11:51,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:11:51,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:11:51,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:11:51,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:11:51,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:11:51,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:11:51,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:11:51,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:11:51,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:11:51,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:11:51,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:11:51,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:11:51,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:11:51,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:11:51,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:11:51,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:11:51,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:11:51,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 18:11:51,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:11:51,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:11:51,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:11:51,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:11:51,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:11:51,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:11:51,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:11:51,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:11:51,127 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:11:51,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:11:51,127 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:11:51,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:11:51,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:11:51,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:11:51,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:11:51,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:11:51,129 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:11:51,129 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 18:11:51,129 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 18:11:51,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:11:51,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:11:51,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:11:51,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:11:51,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:11:51,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:11:51,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:11:51,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:11:51,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:11:51,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:11:51,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:11:51,131 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 18:11:51,132 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 18:11:51,132 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:11:51,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:11:51,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:11:51,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:11:51,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 18:11:51,133 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c79b5b9c620a89b5ccbc8a9238defbac5dd93f8a16c11c7717d83a12d6f10e40 [2021-12-06 18:11:51,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:11:51,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:11:51,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:11:51,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:11:51,397 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:11:51,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/gcd_3+newton_1_8.i [2021-12-06 18:11:51,440 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/data/27dd5e651/01e81799b15148edaab4f0b552b8628b/FLAGf1341d64e [2021-12-06 18:11:51,836 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:11:51,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/sv-benchmarks/c/combinations/gcd_3+newton_1_8.i [2021-12-06 18:11:51,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/data/27dd5e651/01e81799b15148edaab4f0b552b8628b/FLAGf1341d64e [2021-12-06 18:11:51,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/data/27dd5e651/01e81799b15148edaab4f0b552b8628b [2021-12-06 18:11:51,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:11:51,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:11:51,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:11:51,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:11:51,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:11:51,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:11:51" (1/1) ... [2021-12-06 18:11:51,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d96ce8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:51, skipping insertion in model container [2021-12-06 18:11:51,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:11:51" (1/1) ... [2021-12-06 18:11:51,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:11:51,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:11:51,999 WARN L230 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_891b3f26-96be-466b-bc0a-6fd297fe30f9/sv-benchmarks/c/combinations/gcd_3+newton_1_8.i[1226,1239] [2021-12-06 18:11:52,033 WARN L230 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_891b3f26-96be-466b-bc0a-6fd297fe30f9/sv-benchmarks/c/combinations/gcd_3+newton_1_8.i[2820,2833] [2021-12-06 18:11:52,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:11:52,049 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:11:52,062 WARN L230 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_891b3f26-96be-466b-bc0a-6fd297fe30f9/sv-benchmarks/c/combinations/gcd_3+newton_1_8.i[1226,1239] [2021-12-06 18:11:52,073 WARN L230 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_891b3f26-96be-466b-bc0a-6fd297fe30f9/sv-benchmarks/c/combinations/gcd_3+newton_1_8.i[2820,2833] [2021-12-06 18:11:52,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:11:52,085 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:11:52,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52 WrapperNode [2021-12-06 18:11:52,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:11:52,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:11:52,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:11:52,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:11:52,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (1/1) ... [2021-12-06 18:11:52,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (1/1) ... [2021-12-06 18:11:52,116 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-06 18:11:52,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:11:52,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:11:52,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:11:52,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:11:52,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (1/1) ... [2021-12-06 18:11:52,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (1/1) ... [2021-12-06 18:11:52,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (1/1) ... [2021-12-06 18:11:52,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (1/1) ... [2021-12-06 18:11:52,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (1/1) ... [2021-12-06 18:11:52,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (1/1) ... [2021-12-06 18:11:52,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (1/1) ... [2021-12-06 18:11:52,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:11:52,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:11:52,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:11:52,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:11:52,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (1/1) ... [2021-12-06 18:11:52,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:11:52,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:52,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:11:52,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:11:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:11:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 18:11:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:11:52,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:11:52,242 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:11:52,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:11:58,120 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:11:58,125 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:11:58,126 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:11:58,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:11:58 BoogieIcfgContainer [2021-12-06 18:11:58,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:11:58,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:11:58,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:11:58,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:11:58,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:11:51" (1/3) ... [2021-12-06 18:11:58,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da6d550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:11:58, skipping insertion in model container [2021-12-06 18:11:58,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:52" (2/3) ... [2021-12-06 18:11:58,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da6d550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:11:58, skipping insertion in model container [2021-12-06 18:11:58,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:11:58" (3/3) ... [2021-12-06 18:11:58,134 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_8.i [2021-12-06 18:11:58,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:11:58,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 18:11:58,175 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:11:58,180 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:11:58,180 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 18:11:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2021-12-06 18:11:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:11:58,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:58,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:58,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:58,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:58,199 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-06 18:11:58,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:11:58,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133073168] [2021-12-06 18:11:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:58,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:11:58,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:11:58,210 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:11:58,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 18:11:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:59,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 18:11:59,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:59,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:11:59,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:11:59,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133073168] [2021-12-06 18:11:59,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133073168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:59,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:59,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:11:59,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935904849] [2021-12-06 18:11:59,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:59,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:11:59,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:11:59,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:11:59,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:11:59,389 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-06 18:11:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:59,399 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-06 18:11:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:11:59,401 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-12-06 18:11:59,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:59,406 INFO L225 Difference]: With dead ends: 47 [2021-12-06 18:11:59,406 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 18:11:59,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:11:59,411 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:59,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:11:59,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 18:11:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-06 18:11:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-12-06 18:11:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-06 18:11:59,434 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-06 18:11:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:59,435 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-06 18:11:59,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-06 18:11:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-06 18:11:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 18:11:59,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:59,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:59,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:11:59,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:11:59,637 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-06 18:11:59,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:11:59,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635324074] [2021-12-06 18:11:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:59,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:11:59,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:11:59,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:11:59,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 18:12:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:12:03,432 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:12:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:12:09,241 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 18:12:09,241 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:12:09,242 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-06 18:12:09,244 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-06 18:12:09,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-06 18:12:09,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:12:09,455 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 18:12:09,464 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:12:09,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:12:09 BoogieIcfgContainer [2021-12-06 18:12:09,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:12:09,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:12:09,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:12:09,505 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:12:09,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:11:58" (3/4) ... [2021-12-06 18:12:09,506 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 18:12:09,537 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:12:09,537 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:12:09,538 INFO L158 Benchmark]: Toolchain (without parser) took 17679.30ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 39.0MB in the beginning and 52.8MB in the end (delta: -13.8MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-12-06 18:12:09,538 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.6MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:12:09,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.24ms. Allocated memory is still 58.7MB. Free memory was 38.8MB in the beginning and 40.4MB in the end (delta: -1.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:12:09,539 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.65ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 38.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:12:09,540 INFO L158 Benchmark]: Boogie Preprocessor took 22.44ms. Allocated memory is still 58.7MB. Free memory was 38.4MB in the beginning and 37.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:12:09,540 INFO L158 Benchmark]: RCFGBuilder took 5987.88ms. Allocated memory is still 58.7MB. Free memory was 37.1MB in the beginning and 26.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:12:09,541 INFO L158 Benchmark]: TraceAbstraction took 11375.51ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 26.1MB in the beginning and 54.5MB in the end (delta: -28.4MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-12-06 18:12:09,541 INFO L158 Benchmark]: Witness Printer took 32.51ms. Allocated memory is still 92.3MB. Free memory was 54.5MB in the beginning and 52.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:12:09,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.6MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.24ms. Allocated memory is still 58.7MB. Free memory was 38.8MB in the beginning and 40.4MB in the end (delta: -1.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.65ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 38.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.44ms. Allocated memory is still 58.7MB. Free memory was 38.4MB in the beginning and 37.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 5987.88ms. Allocated memory is still 58.7MB. Free memory was 37.1MB in the beginning and 26.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11375.51ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 26.1MB in the beginning and 54.5MB in the end (delta: -28.4MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Witness Printer took 32.51ms. Allocated memory is still 92.3MB. Free memory was 54.5MB in the beginning and 52.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. 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: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [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; VAL [\old(x)=1.6961736679077148, \result=1.0078669786453247, x=1.6961736679077148] [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; VAL [\old(x)=1.6961736679077148, \result=-0.06054672226309776, x=1.6961736679077148] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=1.6961736679077148, x=18.34227752685547] [L102] reach_error() VAL [IN=1.6961736679077148, x=18.34227752685547] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 11.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 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, 4.8s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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! [2021-12-06 18:12:09,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891b3f26-96be-466b-bc0a-6fd297fe30f9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE