./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:20:58,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:20:58,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:20:58,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:20:58,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:20:58,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:20:58,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:20:58,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:20:58,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:20:58,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:20:58,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:20:58,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:20:58,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:20:58,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:20:58,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:20:58,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:20:58,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:20:58,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:20:58,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:20:58,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:20:58,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:20:58,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:20:58,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:20:58,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:20:58,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:20:58,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:20:58,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:20:58,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:20:58,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:20:58,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:20:58,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:20:58,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:20:58,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:20:58,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:20:58,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:20:58,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:20:58,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:20:58,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:20:58,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:20:58,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:20:58,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:20:58,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:20:58,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:20:58,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:20:58,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:20:58,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:20:58,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:20:58,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:20:58,724 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:20:58,724 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:20:58,724 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:20:58,724 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:20:58,725 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:20:58,725 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:20:58,725 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:20:58,726 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:20:58,726 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:20:58,726 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:20:58,726 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:20:58,727 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:20:58,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:20:58,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:20:58,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:20:58,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:20:58,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:20:58,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:20:58,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:20:58,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:20:58,730 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:20:58,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:20:58,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:20:58,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:20:58,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:20:58,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:20:58,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:20:58,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:20:58,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:20:58,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:20:58,733 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:20:58,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:20:58,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:20:58,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:20:58,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:20:58,735 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 [2021-11-23 02:20:59,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:20:59,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:20:59,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:20:59,080 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:20:59,081 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:20:59,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2021-11-23 02:20:59,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/data/8eb66496d/cb2db39f734a47d9944de4755a554b82/FLAGc32419d7c [2021-11-23 02:20:59,726 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:20:59,727 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2021-11-23 02:20:59,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/data/8eb66496d/cb2db39f734a47d9944de4755a554b82/FLAGc32419d7c [2021-11-23 02:21:00,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/data/8eb66496d/cb2db39f734a47d9944de4755a554b82 [2021-11-23 02:21:00,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:21:00,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:21:00,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:21:00,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:21:00,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:21:00,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6b35ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00, skipping insertion in model container [2021-11-23 02:21:00,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:21:00,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:21:00,298 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_552a786c-c3f1-4376-bbbc-9ed45463799b/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[1226,1239] [2021-11-23 02:21:00,353 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_552a786c-c3f1-4376-bbbc-9ed45463799b/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[2820,2833] [2021-11-23 02:21:00,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:21:00,364 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:21:00,379 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_552a786c-c3f1-4376-bbbc-9ed45463799b/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[1226,1239] [2021-11-23 02:21:00,392 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_552a786c-c3f1-4376-bbbc-9ed45463799b/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[2820,2833] [2021-11-23 02:21:00,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:21:00,410 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:21:00,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00 WrapperNode [2021-11-23 02:21:00,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:21:00,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:21:00,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:21:00,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:21:00,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,460 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-23 02:21:00,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:21:00,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:21:00,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:21:00,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:21:00,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:21:00,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:21:00,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:21:00,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:21:00,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (1/1) ... [2021-11-23 02:21:00,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:21:00,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:00,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:21:00,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:21:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:21:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:21:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:21:00,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:21:00,696 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:21:00,698 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:21:00,901 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:21:00,961 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:21:00,961 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:21:00,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:00 BoogieIcfgContainer [2021-11-23 02:21:00,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:21:00,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:21:00,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:21:00,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:21:00,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:21:00" (1/3) ... [2021-11-23 02:21:00,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d870306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:00, skipping insertion in model container [2021-11-23 02:21:00,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:00" (2/3) ... [2021-11-23 02:21:00,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d870306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:00, skipping insertion in model container [2021-11-23 02:21:00,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:00" (3/3) ... [2021-11-23 02:21:00,973 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_2.i [2021-11-23 02:21:00,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:21:00,979 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 02:21:01,030 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:21:01,037 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=FINITE_AUTOMATA, 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 [2021-11-23 02:21:01,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 02:21:01,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-11-23 02:21:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 02:21:01,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:01,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 02:21:01,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:01,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:01,066 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2021-11-23 02:21:01,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:01,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515620283] [2021-11-23 02:21:01,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:01,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:21:01,188 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:21:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:21:01,225 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:21:01,227 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:21:01,229 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 02:21:01,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 02:21:01,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:21:01,238 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 02:21:01,242 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:21:01,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:21:01 BoogieIcfgContainer [2021-11-23 02:21:01,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:21:01,295 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:21:01,295 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:21:01,296 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:21:01,296 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:00" (3/4) ... [2021-11-23 02:21:01,300 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:21:01,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:21:01,301 INFO L158 Benchmark]: Toolchain (without parser) took 1230.44ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 76.8MB in the beginning and 118.1MB in the end (delta: -41.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:21:01,302 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 109.1MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:21:01,303 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.53ms. Allocated memory is still 109.1MB. Free memory was 76.5MB in the beginning and 82.8MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:21:01,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.53ms. Allocated memory is still 109.1MB. Free memory was 82.4MB in the beginning and 80.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:21:01,305 INFO L158 Benchmark]: Boogie Preprocessor took 29.96ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 79.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:21:01,306 INFO L158 Benchmark]: RCFGBuilder took 472.04ms. Allocated memory is still 109.1MB. Free memory was 79.5MB in the beginning and 66.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:21:01,307 INFO L158 Benchmark]: TraceAbstraction took 322.97ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 66.5MB in the beginning and 118.5MB in the end (delta: -52.0MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-11-23 02:21:01,307 INFO L158 Benchmark]: Witness Printer took 5.00ms. Allocated memory is still 142.6MB. Free memory was 118.4MB in the beginning and 118.1MB in the end (delta: 307.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:21:01,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 109.1MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.53ms. Allocated memory is still 109.1MB. Free memory was 76.5MB in the beginning and 82.8MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.53ms. Allocated memory is still 109.1MB. Free memory was 82.4MB in the beginning and 80.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.96ms. Allocated memory is still 109.1MB. Free memory was 80.7MB in the beginning and 79.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 472.04ms. Allocated memory is still 109.1MB. Free memory was 79.5MB in the beginning and 66.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 322.97ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 66.5MB in the beginning and 118.5MB in the end (delta: -52.0MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Witness Printer took 5.00ms. Allocated memory is still 142.6MB. Free memory was 118.4MB in the beginning and 118.1MB in the end (delta: 307.8kB). 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 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 02:21:01,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:21:04,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:21:04,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:21:04,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:21:04,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:21:04,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:21:04,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:21:04,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:21:04,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:21:04,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:21:04,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:21:04,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:21:04,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:21:04,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:21:04,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:21:04,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:21:04,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:21:04,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:21:04,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:21:04,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:21:04,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:21:04,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:21:04,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:21:04,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:21:04,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:21:04,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:21:04,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:21:04,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:21:04,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:21:04,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:21:04,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:21:04,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:21:04,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:21:04,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:21:04,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:21:04,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:21:04,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:21:04,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:21:04,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:21:04,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:21:04,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:21:04,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 02:21:04,481 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:21:04,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:21:04,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:21:04,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:21:04,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:21:04,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:21:04,485 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:21:04,485 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:21:04,485 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:21:04,486 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:21:04,487 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:21:04,487 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:21:04,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:21:04,490 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:21:04,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:21:04,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:21:04,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:21:04,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:21:04,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:21:04,492 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:21:04,492 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:21:04,493 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:21:04,493 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:21:04,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:21:04,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:21:04,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:21:04,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:21:04,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:21:04,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:21:04,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:21:04,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:21:04,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:21:04,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:21:04,497 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:21:04,497 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:21:04,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:21:04,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:21:04,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:21:04,499 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_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 [2021-11-23 02:21:05,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:21:05,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:21:05,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:21:05,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:21:05,037 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:21:05,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2021-11-23 02:21:05,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/data/df94f6cbc/58185876c1d64b12a1b2d12967129587/FLAG1485fdcfb [2021-11-23 02:21:05,735 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:21:05,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2021-11-23 02:21:05,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/data/df94f6cbc/58185876c1d64b12a1b2d12967129587/FLAG1485fdcfb [2021-11-23 02:21:06,103 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/data/df94f6cbc/58185876c1d64b12a1b2d12967129587 [2021-11-23 02:21:06,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:21:06,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:21:06,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:21:06,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:21:06,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:21:06,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d70afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06, skipping insertion in model container [2021-11-23 02:21:06,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:21:06,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:21:06,381 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_552a786c-c3f1-4376-bbbc-9ed45463799b/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[1226,1239] [2021-11-23 02:21:06,456 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_552a786c-c3f1-4376-bbbc-9ed45463799b/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[2820,2833] [2021-11-23 02:21:06,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:21:06,498 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:21:06,512 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_552a786c-c3f1-4376-bbbc-9ed45463799b/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[1226,1239] [2021-11-23 02:21:06,524 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_552a786c-c3f1-4376-bbbc-9ed45463799b/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[2820,2833] [2021-11-23 02:21:06,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:21:06,543 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:21:06,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06 WrapperNode [2021-11-23 02:21:06,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:21:06,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:21:06,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:21:06,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:21:06,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,592 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-23 02:21:06,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:21:06,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:21:06,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:21:06,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:21:06,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:21:06,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:21:06,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:21:06,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:21:06,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (1/1) ... [2021-11-23 02:21:06,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:21:06,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:06,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:21:06,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:21:06,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:21:06,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:21:06,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:21:06,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:21:06,791 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:21:06,793 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:21:13,608 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:21:13,616 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:21:13,616 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:21:13,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:13 BoogieIcfgContainer [2021-11-23 02:21:13,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:21:13,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:21:13,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:21:13,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:21:13,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:21:06" (1/3) ... [2021-11-23 02:21:13,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae9d04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:13, skipping insertion in model container [2021-11-23 02:21:13,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:06" (2/3) ... [2021-11-23 02:21:13,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae9d04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:13, skipping insertion in model container [2021-11-23 02:21:13,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:13" (3/3) ... [2021-11-23 02:21:13,629 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_2.i [2021-11-23 02:21:13,636 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:21:13,636 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 02:21:13,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:21:13,705 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=FINITE_AUTOMATA, 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 [2021-11-23 02:21:13,705 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 02:21:13,722 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) [2021-11-23 02:21:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:21:13,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:13,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:21:13,730 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-23 02:21:13,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:21:13,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451669808] [2021-11-23 02:21:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:13,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:21:13,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:21:13,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:21:13,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:21:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:15,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 02:21:15,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:21:15,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:21:15,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:21:15,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451669808] [2021-11-23 02:21:15,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451669808] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:15,453 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:21:15,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:21:15,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759302890] [2021-11-23 02:21:15,457 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:15,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:21:15,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:21:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:21:15,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:21:15,503 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) [2021-11-23 02:21:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:15,525 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-23 02:21:15,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:21:15,528 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 [2021-11-23 02:21:15,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:15,539 INFO L225 Difference]: With dead ends: 47 [2021-11-23 02:21:15,539 INFO L226 Difference]: Without dead ends: 19 [2021-11-23 02:21:15,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:21:15,548 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 [2021-11-23 02:21:15,550 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] [2021-11-23 02:21:15,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-23 02:21:15,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-23 02:21:15,588 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) [2021-11-23 02:21:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-23 02:21:15,591 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-23 02:21:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:15,592 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-23 02:21:15,592 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) [2021-11-23 02:21:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-23 02:21:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:21:15,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:15,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:21:15,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:15,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:21:15,795 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:15,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:15,796 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-23 02:21:15,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:21:15,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802747836] [2021-11-23 02:21:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:15,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:21:15,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:21:15,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:21:15,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552a786c-c3f1-4376-bbbc-9ed45463799b/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process