./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G --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 f5a5fcfdef398824c80e5dd00ccb13245b1aba31a53b04be2e0e92d8a739e53d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:09:34,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:09:34,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:09:34,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:09:34,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:09:34,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:09:34,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:09:34,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:09:34,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:09:34,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:09:34,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:09:34,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:09:34,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:09:34,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:09:34,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:09:34,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:09:34,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:09:34,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:09:34,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:09:34,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:09:34,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:09:34,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:09:34,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:09:34,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:09:34,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:09:34,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:09:34,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:09:34,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:09:34,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:09:34,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:09:34,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:09:34,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:09:34,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:09:34,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:09:34,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:09:34,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:09:34,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:09:34,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:09:34,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:09:34,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:09:34,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:09:34,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:09:34,243 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:09:34,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:09:34,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:09:34,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:09:34,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:09:34,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:09:34,247 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:09:34,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:09:34,248 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:09:34,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:09:34,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:09:34,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:09:34,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:09:34,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:09:34,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:09:34,250 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:09:34,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:09:34,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:09:34,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:09:34,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:09:34,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:09:34,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:09:34,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:09:34,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:09:34,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:09:34,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:09:34,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:09:34,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:09:34,255 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:09:34,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:09:34,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:09:34,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:09:34,256 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_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5a5fcfdef398824c80e5dd00ccb13245b1aba31a53b04be2e0e92d8a739e53d [2021-11-23 13:09:34,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:09:34,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:09:34,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:09:34,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:09:34,661 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:09:34,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/gcd_3+newton_3_7.i [2021-11-23 13:09:34,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/data/f6042092d/794c743b17c24736b805ed0b074ec129/FLAG134455148 [2021-11-23 13:09:35,337 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:09:35,338 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i [2021-11-23 13:09:35,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/data/f6042092d/794c743b17c24736b805ed0b074ec129/FLAG134455148 [2021-11-23 13:09:35,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/data/f6042092d/794c743b17c24736b805ed0b074ec129 [2021-11-23 13:09:35,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:09:35,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:09:35,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:09:35,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:09:35,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:09:35,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:09:35" (1/1) ... [2021-11-23 13:09:35,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6883f441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:35, skipping insertion in model container [2021-11-23 13:09:35,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:09:35" (1/1) ... [2021-11-23 13:09:35,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:09:35,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:09:35,980 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_c135de8f-3981-458b-8ba6-430ed2c44a36/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[1226,1239] [2021-11-23 13:09:36,016 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_c135de8f-3981-458b-8ba6-430ed2c44a36/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[2862,2875] [2021-11-23 13:09:36,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:09:36,028 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:09:36,050 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_c135de8f-3981-458b-8ba6-430ed2c44a36/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[1226,1239] [2021-11-23 13:09:36,087 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_c135de8f-3981-458b-8ba6-430ed2c44a36/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[2862,2875] [2021-11-23 13:09:36,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:09:36,110 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:09:36,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36 WrapperNode [2021-11-23 13:09:36,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:09:36,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:09:36,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:09:36,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:09:36,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (1/1) ... [2021-11-23 13:09:36,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (1/1) ... [2021-11-23 13:09:36,187 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 100 [2021-11-23 13:09:36,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:09:36,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:09:36,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:09:36,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:09:36,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (1/1) ... [2021-11-23 13:09:36,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (1/1) ... [2021-11-23 13:09:36,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (1/1) ... [2021-11-23 13:09:36,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (1/1) ... [2021-11-23 13:09:36,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (1/1) ... [2021-11-23 13:09:36,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (1/1) ... [2021-11-23 13:09:36,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (1/1) ... [2021-11-23 13:09:36,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:09:36,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:09:36,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:09:36,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:09:36,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (1/1) ... [2021-11-23 13:09:36,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:09:36,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:36,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:09:36,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:09:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:09:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:09:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:09:36,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:09:36,427 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:09:36,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:09:36,594 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:09:36,601 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:09:36,602 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:09:36,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:09:36 BoogieIcfgContainer [2021-11-23 13:09:36,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:09:36,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:09:36,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:09:36,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:09:36,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:09:35" (1/3) ... [2021-11-23 13:09:36,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cce3748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:09:36, skipping insertion in model container [2021-11-23 13:09:36,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:36" (2/3) ... [2021-11-23 13:09:36,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cce3748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:09:36, skipping insertion in model container [2021-11-23 13:09:36,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:09:36" (3/3) ... [2021-11-23 13:09:36,614 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_7.i [2021-11-23 13:09:36,619 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:09:36,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 13:09:36,712 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:09:36,720 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 [2021-11-23 13:09:36,720 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 13:09:36,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 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 13:09:36,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 13:09:36,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:36,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:36,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:09:36,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:36,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1947301547, now seen corresponding path program 1 times [2021-11-23 13:09:36,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:36,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391620915] [2021-11-23 13:09:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:36,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:37,096 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 13:09:37,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:37,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391620915] [2021-11-23 13:09:37,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391620915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:37,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:37,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:09:37,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675012228] [2021-11-23 13:09:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:37,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:09:37,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:37,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:09:37,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:09:37,142 INFO L87 Difference]: Start difference. First operand has 31 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 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 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 13:09:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:37,196 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2021-11-23 13:09:37,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:09:37,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-23 13:09:37,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:37,208 INFO L225 Difference]: With dead ends: 78 [2021-11-23 13:09:37,208 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 13:09:37,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:09:37,215 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 23 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:37,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 95 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:09:37,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 13:09:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2021-11-23 13:09:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 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 13:09:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-11-23 13:09:37,251 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2021-11-23 13:09:37,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:37,252 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-11-23 13:09:37,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 13:09:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-11-23 13:09:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 13:09:37,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:37,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:37,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:09:37,254 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:09:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:37,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1538319123, now seen corresponding path program 1 times [2021-11-23 13:09:37,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:37,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465570715] [2021-11-23 13:09:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:37,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:37,332 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 13:09:37,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:37,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465570715] [2021-11-23 13:09:37,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465570715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:37,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:37,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:09:37,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870176291] [2021-11-23 13:09:37,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:37,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:09:37,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:37,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:09:37,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:09:37,337 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 13:09:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:37,447 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-11-23 13:09:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:09:37,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2021-11-23 13:09:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:37,450 INFO L225 Difference]: With dead ends: 30 [2021-11-23 13:09:37,451 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 13:09:37,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:09:37,454 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:37,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 90 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:09:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 13:09:37,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-23 13:09:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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 13:09:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-23 13:09:37,468 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2021-11-23 13:09:37,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:37,468 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-23 13:09:37,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 13:09:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-23 13:09:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 13:09:37,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:37,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:37,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:09:37,476 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:09:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2044545692, now seen corresponding path program 1 times [2021-11-23 13:09:37,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:37,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41348258] [2021-11-23 13:09:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:37,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:37,496 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:09:37,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993584163] [2021-11-23 13:09:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:37,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:37,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:37,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:09:37,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:09:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:37,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 13:09:37,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:10:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:11,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:10:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:22,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:22,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41348258] [2021-11-23 13:10:22,379 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:10:22,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993584163] [2021-11-23 13:10:22,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993584163] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:10:22,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:10:22,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-11-23 13:10:22,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258969711] [2021-11-23 13:10:22,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:10:22,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 13:10:22,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:22,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 13:10:22,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=171, Unknown=16, NotChecked=0, Total=240 [2021-11-23 13:10:22,384 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 13:10:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:22,814 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-11-23 13:10:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:10:22,815 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 12 [2021-11-23 13:10:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:22,816 INFO L225 Difference]: With dead ends: 37 [2021-11-23 13:10:22,816 INFO L226 Difference]: Without dead ends: 28 [2021-11-23 13:10:22,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 42.9s TimeCoverageRelationStatistics Valid=62, Invalid=194, Unknown=16, NotChecked=0, Total=272 [2021-11-23 13:10:22,818 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:22,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 26 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2021-11-23 13:10:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-23 13:10:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-11-23 13:10:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 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 13:10:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-23 13:10:22,824 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2021-11-23 13:10:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:22,824 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-23 13:10:22,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 13:10:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-23 13:10:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:10:22,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:22,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:10:22,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:10:23,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:10:23,049 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:10:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1277269317, now seen corresponding path program 1 times [2021-11-23 13:10:23,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:23,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565620524] [2021-11-23 13:10:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:23,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:10:23,070 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:10:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:10:23,096 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:10:23,097 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 13:10:23,098 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 13:10:23,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 13:10:23,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:10:23,104 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-23 13:10:23,107 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:10:23,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:10:23 BoogieIcfgContainer [2021-11-23 13:10:23,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:10:23,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:10:23,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:10:23,135 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:10:23,135 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:09:36" (3/4) ... [2021-11-23 13:10:23,139 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:10:23,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:10:23,140 INFO L158 Benchmark]: Toolchain (without parser) took 47416.87ms. Allocated memory was 88.1MB in the beginning and 132.1MB in the end (delta: 44.0MB). Free memory was 56.1MB in the beginning and 58.9MB in the end (delta: -2.8MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2021-11-23 13:10:23,141 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 88.1MB. Free memory was 41.5MB in the beginning and 41.5MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:10:23,141 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.70ms. Allocated memory was 88.1MB in the beginning and 132.1MB in the end (delta: 44.0MB). Free memory was 55.9MB in the beginning and 107.3MB in the end (delta: -51.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:10:23,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.72ms. Allocated memory is still 132.1MB. Free memory was 107.3MB in the beginning and 105.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:10:23,143 INFO L158 Benchmark]: Boogie Preprocessor took 53.34ms. Allocated memory is still 132.1MB. Free memory was 105.7MB in the beginning and 104.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:10:23,143 INFO L158 Benchmark]: RCFGBuilder took 360.98ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 93.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 13:10:23,144 INFO L158 Benchmark]: TraceAbstraction took 46527.76ms. Allocated memory is still 132.1MB. Free memory was 92.6MB in the beginning and 58.9MB in the end (delta: 33.7MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2021-11-23 13:10:23,144 INFO L158 Benchmark]: Witness Printer took 4.65ms. Allocated memory is still 132.1MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:10:23,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 88.1MB. Free memory was 41.5MB in the beginning and 41.5MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.70ms. Allocated memory was 88.1MB in the beginning and 132.1MB in the end (delta: 44.0MB). Free memory was 55.9MB in the beginning and 107.3MB in the end (delta: -51.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.72ms. Allocated memory is still 132.1MB. Free memory was 107.3MB in the beginning and 105.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.34ms. Allocated memory is still 132.1MB. Free memory was 105.7MB in the beginning and 104.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 360.98ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 93.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 46527.76ms. Allocated memory is still 132.1MB. Free memory was 92.6MB in the beginning and 58.9MB in the end (delta: 33.7MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. * Witness Printer took 4.65ms. Allocated memory is still 132.1MB. Free memory is still 58.9MB. 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 97. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [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; 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); [L95] CALL, EXPR f(x) [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)=52, x=52] [L95] RET, EXPR f(x) [L95] CALL, EXPR fp(x) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=52, x=52] [L95] RET, EXPR fp(x) [L95] x = x - f(x)/fp(x) [L97] CALL, EXPR f(x) [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)=51, x=51] [L97] RET, EXPR f(x) [L97] CALL, EXPR fp(x) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=51, x=51] [L97] RET, EXPR fp(x) [L97] x = x - f(x)/fp(x) [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, 31 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 46.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 291 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 14 IncrementalHoareTripleChecker+Unchecked, 217 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 74 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 43.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 25, 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, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 45.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 4 QuantifiedInterpolants, 339 SizeOfPredicates, 10 NumberOfNonLiveVariables, 65 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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 13:10:23,361 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-23 13:10:23,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 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_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G --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 f5a5fcfdef398824c80e5dd00ccb13245b1aba31a53b04be2e0e92d8a739e53d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:10:25,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:10:25,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:10:25,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:10:25,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:10:25,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:10:25,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:10:25,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:10:25,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:10:25,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:10:25,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:10:25,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:10:25,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:10:25,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:10:25,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:10:25,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:10:25,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:10:25,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:10:25,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:10:25,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:10:25,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:10:25,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:10:25,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:10:25,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:10:25,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:10:25,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:10:25,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:10:25,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:10:25,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:10:25,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:10:25,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:10:25,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:10:25,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:10:25,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:10:25,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:10:25,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:10:25,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:10:25,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:10:25,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:10:25,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:10:25,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:10:25,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 13:10:25,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:10:25,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:10:25,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:10:25,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:10:25,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:10:25,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:10:25,991 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:10:25,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:10:25,992 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:10:25,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:10:25,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:10:25,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:10:25,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:10:25,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:10:25,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:10:25,995 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:10:25,995 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:10:25,996 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:10:25,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:10:25,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:10:25,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:10:25,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:10:25,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:10:25,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:10:25,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:10:25,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:10:25,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:10:25,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:10:25,999 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:10:25,999 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:10:25,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:10:26,000 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:10:26,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:10:26,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:10:26,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:10:26,001 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_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5a5fcfdef398824c80e5dd00ccb13245b1aba31a53b04be2e0e92d8a739e53d [2021-11-23 13:10:26,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:10:26,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:10:26,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:10:26,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:10:26,399 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:10:26,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/combinations/gcd_3+newton_3_7.i [2021-11-23 13:10:26,482 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/data/32d43fe87/897ca3d3e7004a61a4990fb2b3fb9914/FLAGb858fb3d0 [2021-11-23 13:10:27,115 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:10:27,120 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i [2021-11-23 13:10:27,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/data/32d43fe87/897ca3d3e7004a61a4990fb2b3fb9914/FLAGb858fb3d0 [2021-11-23 13:10:27,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/data/32d43fe87/897ca3d3e7004a61a4990fb2b3fb9914 [2021-11-23 13:10:27,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:10:27,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:10:27,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:10:27,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:10:27,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:10:27,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116e3079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27, skipping insertion in model container [2021-11-23 13:10:27,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:10:27,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:10:27,634 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_c135de8f-3981-458b-8ba6-430ed2c44a36/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[1226,1239] [2021-11-23 13:10:27,670 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_c135de8f-3981-458b-8ba6-430ed2c44a36/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[2862,2875] [2021-11-23 13:10:27,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:10:27,688 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:10:27,737 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_c135de8f-3981-458b-8ba6-430ed2c44a36/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[1226,1239] [2021-11-23 13:10:27,794 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_c135de8f-3981-458b-8ba6-430ed2c44a36/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[2862,2875] [2021-11-23 13:10:27,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:10:27,837 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:10:27,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27 WrapperNode [2021-11-23 13:10:27,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:10:27,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:10:27,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:10:27,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:10:27,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,918 INFO L137 Inliner]: procedures = 28, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 95 [2021-11-23 13:10:27,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:10:27,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:10:27,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:10:27,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:10:27,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:27,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:10:27,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:10:27,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:10:27,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:10:27,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (1/1) ... [2021-11-23 13:10:28,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:10:28,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:10:28,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:10:28,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:10:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:10:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 13:10:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:10:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:10:28,151 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:10:28,153 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:10:44,461 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:10:44,470 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:10:44,471 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:10:44,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:10:44 BoogieIcfgContainer [2021-11-23 13:10:44,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:10:44,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:10:44,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:10:44,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:10:44,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:10:27" (1/3) ... [2021-11-23 13:10:44,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e341038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:10:44, skipping insertion in model container [2021-11-23 13:10:44,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:10:27" (2/3) ... [2021-11-23 13:10:44,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e341038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:10:44, skipping insertion in model container [2021-11-23 13:10:44,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:10:44" (3/3) ... [2021-11-23 13:10:44,484 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_7.i [2021-11-23 13:10:44,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:10:44,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 13:10:44,593 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:10:44,600 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 [2021-11-23 13:10:44,601 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 13:10:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 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 13:10:44,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 13:10:44,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:44,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:10:44,626 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:10:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1947301547, now seen corresponding path program 1 times [2021-11-23 13:10:44,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:10:44,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856234847] [2021-11-23 13:10:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:44,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:10:44,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:10:44,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:10:44,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:10:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:44,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:10:44,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:10:45,077 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 13:10:45,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:10:45,453 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 13:10:45,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:10:45,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856234847] [2021-11-23 13:10:45,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856234847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:45,455 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:45,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 13:10:45,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882130630] [2021-11-23 13:10:45,458 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:45,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:10:45,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:10:45,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:10:45,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:10:45,509 INFO L87 Difference]: Start difference. First operand has 31 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 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 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 13:10:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:45,884 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2021-11-23 13:10:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:10:45,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 11 [2021-11-23 13:10:45,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:45,896 INFO L225 Difference]: With dead ends: 88 [2021-11-23 13:10:45,897 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 13:10:45,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:10:45,905 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 39 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:45,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 149 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:10:45,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 13:10:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2021-11-23 13:10:45,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 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 13:10:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-11-23 13:10:45,961 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2021-11-23 13:10:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:45,961 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-11-23 13:10:45,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 13:10:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-11-23 13:10:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 13:10:45,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:45,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:10:45,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 13:10:46,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:10:46,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:10:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1538319123, now seen corresponding path program 1 times [2021-11-23 13:10:46,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:10:46,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3278885] [2021-11-23 13:10:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:46,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:10:46,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:10:46,177 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:10:46,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 13:10:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:46,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:10:46,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:10:46,966 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 13:10:46,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:10:47,748 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 13:10:47,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:10:47,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3278885] [2021-11-23 13:10:47,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3278885] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:47,750 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:47,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-23 13:10:47,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21919204] [2021-11-23 13:10:47,750 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:47,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:10:47,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:10:47,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:10:47,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:10:47,754 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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 13:10:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:10:48,739 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-11-23 13:10:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:10:48,739 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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) Word has length 11 [2021-11-23 13:10:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:10:48,741 INFO L225 Difference]: With dead ends: 30 [2021-11-23 13:10:48,741 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 13:10:48,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:10:48,744 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:10:48,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 142 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:10:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 13:10:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-23 13:10:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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 13:10:48,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-23 13:10:48,751 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2021-11-23 13:10:48,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:10:48,751 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-23 13:10:48,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 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 13:10:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-23 13:10:48,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 13:10:48,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:10:48,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:10:48,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:10:48,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:10:48,975 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:10:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2044545692, now seen corresponding path program 1 times [2021-11-23 13:10:48,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:10:48,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681407014] [2021-11-23 13:10:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:48,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:10:48,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:10:48,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:10:48,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 13:10:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:49,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:10:49,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:10:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:54,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:11:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:11:04,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:11:04,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681407014] [2021-11-23 13:11:04,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681407014] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:11:04,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:11:04,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-23 13:11:04,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967163513] [2021-11-23 13:11:04,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:11:04,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 13:11:04,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:11:04,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 13:11:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-23 13:11:04,751 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 18 states, 18 states have (on average 1.1666666666666667) 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 13:11:11,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 13:11:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:30,401 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-11-23 13:11:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 13:11:30,413 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1666666666666667) 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) Word has length 12 [2021-11-23 13:11:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:30,414 INFO L225 Difference]: With dead ends: 38 [2021-11-23 13:11:30,414 INFO L226 Difference]: Without dead ends: 28 [2021-11-23 13:11:30,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=155, Invalid=492, Unknown=3, NotChecked=0, Total=650 [2021-11-23 13:11:30,417 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:30,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 120 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 1 Unknown, 24 Unchecked, 4.6s Time] [2021-11-23 13:11:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-23 13:11:30,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-11-23 13:11:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 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 13:11:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-23 13:11:30,424 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2021-11-23 13:11:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:30,424 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-23 13:11:30,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1666666666666667) 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 13:11:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-23 13:11:30,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:11:30,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:30,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:11:30,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-23 13:11:30,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:11:30,627 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:30,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1277269317, now seen corresponding path program 1 times [2021-11-23 13:11:30,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:11:30,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915087711] [2021-11-23 13:11:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:30,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:11:30,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:11:30,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:11:30,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c135de8f-3981-458b-8ba6-430ed2c44a36/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process