./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_2_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8 --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 bef70c39331e78595b45dbc9116e80e68130a83e4d55fdf4189b866d036d57fe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:26:55,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:26:55,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:26:55,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:26:55,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:26:55,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:26:55,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:26:55,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:26:55,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:26:55,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:26:55,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:26:55,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:26:55,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:26:55,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:26:55,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:26:55,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:26:55,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:26:55,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:26:55,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:26:55,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:26:55,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:26:55,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:26:55,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:26:55,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:26:55,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:26:55,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:26:55,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:26:55,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:26:55,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:26:55,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:26:55,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:26:55,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:26:55,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:26:55,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:26:55,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:26:55,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:26:55,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:26:55,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:26:55,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:26:55,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:26:55,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:26:55,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:26:55,172 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:26:55,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:26:55,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:26:55,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:26:55,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:26:55,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:26:55,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:26:55,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:26:55,175 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:26:55,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:26:55,175 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:26:55,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:26:55,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:26:55,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:26:55,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:26:55,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:26:55,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:26:55,176 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:26:55,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:26:55,177 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:26:55,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:26:55,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:26:55,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:26:55,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:26:55,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:26:55,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:26:55,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:26:55,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:26:55,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:26:55,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:26:55,179 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:26:55,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:26:55,179 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:26:55,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:26:55,180 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:26:55,180 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bef70c39331e78595b45dbc9116e80e68130a83e4d55fdf4189b866d036d57fe [2022-12-13 17:26:55,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:26:55,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:26:55,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:26:55,419 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:26:55,420 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:26:55,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/gcd_1+newton_2_5.i [2022-12-13 17:26:58,023 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:26:58,142 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:26:58,142 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i [2022-12-13 17:26:58,147 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/data/528e9219a/716ef57acc2542f5af192bc8a76dcc1d/FLAGac0ee3b53 [2022-12-13 17:26:58,157 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/data/528e9219a/716ef57acc2542f5af192bc8a76dcc1d [2022-12-13 17:26:58,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:26:58,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:26:58,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:26:58,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:26:58,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:26:58,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f85b4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58, skipping insertion in model container [2022-12-13 17:26:58,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:26:58,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:26:58,324 WARN L237 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_148ead1c-e743-4d02-82a1-213156eb6802/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i[1226,1239] [2022-12-13 17:26:58,340 WARN L237 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_148ead1c-e743-4d02-82a1-213156eb6802/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i[2807,2820] [2022-12-13 17:26:58,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:26:58,348 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:26:58,357 WARN L237 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_148ead1c-e743-4d02-82a1-213156eb6802/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i[1226,1239] [2022-12-13 17:26:58,363 WARN L237 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_148ead1c-e743-4d02-82a1-213156eb6802/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i[2807,2820] [2022-12-13 17:26:58,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:26:58,374 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:26:58,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58 WrapperNode [2022-12-13 17:26:58,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:26:58,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:26:58,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:26:58,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:26:58,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,402 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-12-13 17:26:58,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:26:58,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:26:58,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:26:58,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:26:58,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:26:58,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:26:58,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:26:58,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:26:58,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (1/1) ... [2022-12-13 17:26:58,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:26:58,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:26:58,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:26:58,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:26:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:26:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-13 17:26:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-13 17:26:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-13 17:26:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-13 17:26:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:26:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:26:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:26:58,541 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:26:58,542 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:26:58,673 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:26:58,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:26:58,677 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:26:58,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:26:58 BoogieIcfgContainer [2022-12-13 17:26:58,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:26:58,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:26:58,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:26:58,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:26:58,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:26:58" (1/3) ... [2022-12-13 17:26:58,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f504779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:26:58, skipping insertion in model container [2022-12-13 17:26:58,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:58" (2/3) ... [2022-12-13 17:26:58,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f504779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:26:58, skipping insertion in model container [2022-12-13 17:26:58,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:26:58" (3/3) ... [2022-12-13 17:26:58,685 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_5.i [2022-12-13 17:26:58,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:26:58,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 17:26:58,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:26:58,751 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1678afb4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:26:58,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 17:26:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:26:58,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 17:26:58,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:58,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:58,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:58,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash -247750664, now seen corresponding path program 1 times [2022-12-13 17:26:58,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:58,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230346555] [2022-12-13 17:26:58,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:58,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:58,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:26:58,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521339684] [2022-12-13 17:26:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:58,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:26:58,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:26:58,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:26:58,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:26:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:58,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 17:26:58,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:26:58,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:58,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:26:58,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:58,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230346555] [2022-12-13 17:26:58,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:26:58,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521339684] [2022-12-13 17:26:58,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521339684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:58,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:58,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:26:58,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102496459] [2022-12-13 17:26:58,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:58,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:26:58,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:58,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:26:58,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:26:58,992 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-12-13 17:26:59,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:59,014 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2022-12-13 17:26:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:26:59,016 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2022-12-13 17:26:59,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:59,022 INFO L225 Difference]: With dead ends: 66 [2022-12-13 17:26:59,022 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 17:26:59,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:26:59,029 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:59,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 17:26:59,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-13 17:26:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:26:59,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-12-13 17:26:59,067 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 11 [2022-12-13 17:26:59,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:59,067 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-12-13 17:26:59,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-12-13 17:26:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-12-13 17:26:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 17:26:59,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:59,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:59,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:26:59,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 17:26:59,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:59,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash -251444748, now seen corresponding path program 1 times [2022-12-13 17:26:59,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:59,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942158204] [2022-12-13 17:26:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:59,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:59,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:26:59,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331978960] [2022-12-13 17:26:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:59,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:26:59,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:26:59,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:26:59,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:26:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:59,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:26:59,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:26:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:59,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:26:59,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:59,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942158204] [2022-12-13 17:26:59,393 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:26:59,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331978960] [2022-12-13 17:26:59,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331978960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:59,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:59,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:26:59,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983624879] [2022-12-13 17:26:59,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:59,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:26:59,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:59,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:26:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:26:59,396 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-12-13 17:26:59,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:59,407 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-12-13 17:26:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:26:59,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2022-12-13 17:26:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:59,408 INFO L225 Difference]: With dead ends: 36 [2022-12-13 17:26:59,408 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 17:26:59,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:26:59,409 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:59,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 17:26:59,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-13 17:26:59,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:26:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-12-13 17:26:59,414 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-12-13 17:26:59,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:59,414 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-12-13 17:26:59,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-12-13 17:26:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-12-13 17:26:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 17:26:59,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:59,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:59,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 17:26:59,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:26:59,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:59,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:59,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1673157840, now seen corresponding path program 1 times [2022-12-13 17:26:59,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:59,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155067764] [2022-12-13 17:26:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:59,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:26:59,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609910012] [2022-12-13 17:26:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:59,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:26:59,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:26:59,660 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:26:59,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:26:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:59,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 17:26:59,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:26:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:59,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:26:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:59,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:59,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155067764] [2022-12-13 17:26:59,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:26:59,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609910012] [2022-12-13 17:26:59,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609910012] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:26:59,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:26:59,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-12-13 17:26:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810237049] [2022-12-13 17:26:59,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:26:59,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:59,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:59,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:59,778 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-12-13 17:26:59,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:59,829 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-12-13 17:26:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:26:59,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 [2022-12-13 17:26:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:59,830 INFO L225 Difference]: With dead ends: 36 [2022-12-13 17:26:59,830 INFO L226 Difference]: Without dead ends: 31 [2022-12-13 17:26:59,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:26:59,831 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:59,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:26:59,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-13 17:26:59,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-13 17:26:59,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:26:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-12-13 17:26:59,837 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-12-13 17:26:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:59,837 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-12-13 17:26:59,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-12-13 17:26:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-12-13 17:26:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 17:26:59,838 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:59,838 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:59,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:27:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:00,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:00,043 INFO L85 PathProgramCache]: Analyzing trace with hash -276630798, now seen corresponding path program 2 times [2022-12-13 17:27:00,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:00,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961947488] [2022-12-13 17:27:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:00,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:00,078 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:27:00,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539718980] [2022-12-13 17:27:00,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:27:00,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:00,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:00,080 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:27:00,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:27:10,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:27:10,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:27:10,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 17:27:10,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:03,338 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (and (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0))) (not (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2022-12-13 17:28:21,746 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (and (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| |c_ULTIMATE.start_gcd_test_~a#1|) 256) 0) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0))) (not (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2022-12-13 17:28:43,448 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256))) (and (= .cse0 |c_ULTIMATE.start_gcd_test_#res#1|) (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| .cse0) 256) 0) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (not (= .cse0 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0)))) is different from false [2022-12-13 17:29:03,577 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256))) (and (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| .cse0) 256) 0) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (not (= .cse0 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0)))) is different from false [2022-12-13 17:29:05,580 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256))) (and (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| .cse0) 256) 0) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (not (= .cse0 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0)))) is different from true [2022-12-13 17:29:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 17:29:22,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:30:09,974 WARN L859 $PredicateComparison]: unable to prove that (or (let ((.cse27 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse18 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse28 (mod (+ .cse27 |c_ULTIMATE.start_gcd_test_~b#1|) 256)) (.cse29 (mod (+ .cse27 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse9 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse13 (<= .cse29 127)) (.cse23 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse28) 256) 0))) (.cse8 (not .cse18)) (.cse25 (= .cse28 0)) (.cse2 (<= .cse28 127)) (.cse17 (mod .cse27 256))) (let ((.cse19 (<= .cse17 127)) (.cse12 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse29)) 256) 0))) (.cse3 (not .cse2)) (.cse15 (or .cse23 .cse8 .cse25)) (.cse6 (= .cse29 0)) (.cse7 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse29) 256) 0))) (.cse10 (not .cse13)) (.cse14 (not .cse9)) (.cse16 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse28)) 256) 0)))) (and (or (let ((.cse5 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse17)) 256) 0)) .cse18))) (let ((.cse1 (or .cse14 (and (or .cse16 .cse8) .cse5))) (.cse4 (or .cse14 (and .cse5 .cse15)))) (and (or (let ((.cse0 (or (and .cse5 (or .cse6 .cse7 .cse8)) .cse9))) (and (or (and .cse0 .cse1) .cse2) (or .cse3 (and .cse4 .cse0)))) .cse10) (or (let ((.cse11 (or .cse9 (and (or .cse12 .cse8) .cse5)))) (and (or (and .cse1 .cse11) .cse2) (or (and .cse4 .cse11) .cse3))) .cse13)))) .cse19) (or (not .cse19) (let ((.cse22 (or .cse18 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse17) 256) 0)) (= .cse17 0))) (.cse24 (= .cse27 0))) (let ((.cse21 (or .cse14 (and .cse22 (or .cse24 .cse16 .cse8))))) (and (or (let ((.cse20 (or (and (or .cse24 .cse12 .cse8) .cse22) .cse9))) (and (or .cse2 (and .cse20 .cse21)) (or (and (or .cse14 (and .cse22 (or .cse23 .cse24 .cse8 .cse25))) .cse20) .cse3))) .cse13) (or (let ((.cse26 (or .cse9 (and .cse22 (or .cse24 .cse6 .cse7 .cse8))))) (and (or .cse3 (and (or .cse14 (and .cse22 .cse15)) .cse26)) (or (and .cse26 .cse21) .cse2))) .cse10)))))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) is different from true [2022-12-13 17:31:17,245 WARN L233 SmtUtils]: Spent 46.39s on a formula simplification. DAG size of input: 67 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:32:45,747 WARN L233 SmtUtils]: Spent 29.97s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:33:33,839 WARN L859 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~y~0#1_6| Int) (|v_ULTIMATE.start_main1_~x~0#1_5| Int)) (let ((.cse0 (mod (mod (mod (* 255 |v_ULTIMATE.start_main1_~x~0#1_5|) 256) |v_ULTIMATE.start_main1_~y~0#1_6|) 256))) (or (= .cse0 0) (not (= 0 (mod |v_ULTIMATE.start_main1_~x~0#1_5| |v_ULTIMATE.start_main1_~y~0#1_6|))) (<= 0 |v_ULTIMATE.start_main1_~x~0#1_5|) (not (= (mod (mod |v_ULTIMATE.start_main1_~y~0#1_6| .cse0) 256) 0)) (< (+ 128 |v_ULTIMATE.start_main1_~x~0#1_5|) 0) (<= |v_ULTIMATE.start_main1_~y~0#1_6| 0)))) is different from true [2022-12-13 17:33:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 17:33:51,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:33:51,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961947488] [2022-12-13 17:33:51,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:33:51,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539718980] [2022-12-13 17:33:51,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539718980] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:33:51,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:33:51,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2022-12-13 17:33:51,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194273168] [2022-12-13 17:33:51,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:33:51,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 17:33:51,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:33:51,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 17:33:51,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=115, Unknown=25, NotChecked=162, Total=342 [2022-12-13 17:33:51,345 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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) [2022-12-13 17:34:38,659 WARN L233 SmtUtils]: Spent 44.06s on a formula simplification. DAG size of input: 45 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:34:40,960 WARN L837 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main1_~x~0#1| 127) (= (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|) 0) (<= |c_ULTIMATE.start_gcd_test_~a#1| 127) (<= |c_ULTIMATE.start_gcd_test_~b#1| 127) (<= 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 128)) (<= 0 (+ 128 |c_ULTIMATE.start_main1_~x~0#1|)) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (or (let ((.cse2 (mod (* |c_ULTIMATE.start_gcd_test_~a#1| 255) 256))) (let ((.cse0 (<= .cse2 127))) (and (let ((.cse1 (mod (mod .cse2 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not .cse0) (= 0 .cse1) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse1) 256) 0)))) (let ((.cse3 (mod (+ .cse2 (- 256)) |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) (mod (+ .cse3 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) 256) 0)) .cse0 (= .cse3 0)))))) (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (not (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (< 0 |c_ULTIMATE.start_gcd_test_~b#1|) (or (not (= (mod |c_ULTIMATE.start_main1_~x~0#1| |c_ULTIMATE.start_main1_~y~0#1|) 0)) (let ((.cse6 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse5 (<= .cse6 127))) (and (let ((.cse4 (mod (+ .cse6 (- 256)) |c_ULTIMATE.start_main1_~y~0#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_main1_~y~0#1| (+ (- 256) (mod (+ .cse4 (* |c_ULTIMATE.start_main1_~y~0#1| 255)) 256))) 256) 0)) .cse5 (= .cse4 0))) (let ((.cse7 (mod (mod .cse6 |c_ULTIMATE.start_main1_~y~0#1|) 256))) (or (not .cse5) (not (= (mod (mod |c_ULTIMATE.start_main1_~y~0#1| .cse7) 256) 0)) (= .cse7 0)))))) (not (< 0 |c_ULTIMATE.start_main1_~y~0#1|)) (<= 0 |c_ULTIMATE.start_main1_~x~0#1|))) is different from false [2022-12-13 17:34:42,963 WARN L859 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main1_~x~0#1| 127) (= (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|) 0) (<= |c_ULTIMATE.start_gcd_test_~a#1| 127) (<= |c_ULTIMATE.start_gcd_test_~b#1| 127) (<= 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 128)) (<= 0 (+ 128 |c_ULTIMATE.start_main1_~x~0#1|)) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (or (let ((.cse2 (mod (* |c_ULTIMATE.start_gcd_test_~a#1| 255) 256))) (let ((.cse0 (<= .cse2 127))) (and (let ((.cse1 (mod (mod .cse2 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not .cse0) (= 0 .cse1) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse1) 256) 0)))) (let ((.cse3 (mod (+ .cse2 (- 256)) |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) (mod (+ .cse3 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) 256) 0)) .cse0 (= .cse3 0)))))) (< |c_ULTIMATE.start_gcd_test_~b#1| 0) (not (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (< 0 |c_ULTIMATE.start_gcd_test_~b#1|) (or (not (= (mod |c_ULTIMATE.start_main1_~x~0#1| |c_ULTIMATE.start_main1_~y~0#1|) 0)) (let ((.cse6 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse5 (<= .cse6 127))) (and (let ((.cse4 (mod (+ .cse6 (- 256)) |c_ULTIMATE.start_main1_~y~0#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_main1_~y~0#1| (+ (- 256) (mod (+ .cse4 (* |c_ULTIMATE.start_main1_~y~0#1| 255)) 256))) 256) 0)) .cse5 (= .cse4 0))) (let ((.cse7 (mod (mod .cse6 |c_ULTIMATE.start_main1_~y~0#1|) 256))) (or (not .cse5) (not (= (mod (mod |c_ULTIMATE.start_main1_~y~0#1| .cse7) 256) 0)) (= .cse7 0)))))) (not (< 0 |c_ULTIMATE.start_main1_~y~0#1|)) (<= 0 |c_ULTIMATE.start_main1_~x~0#1|))) is different from true [2022-12-13 17:36:07,233 WARN L233 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 83 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:36:09,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:36:11,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:36:13,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:36:16,171 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse29 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse35 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse37 (mod .cse29 256)) (.cse36 (mod (+ .cse29 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse1 (<= .cse36 127)) (.cse25 (= .cse29 0)) (.cse23 (or .cse35 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse37) 256) 0)) (= .cse37 0))) (.cse0 (<= .cse37 127)) (.cse34 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse36)) 256) 0))) (.cse17 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse37)) 256) 0)) .cse35)) (.cse32 (= .cse36 0)) (.cse33 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse36) 256) 0))) (.cse20 (not .cse35))) (let ((.cse3 (and .cse17 (or .cse32 .cse33 .cse20))) (.cse2 (and (or .cse34 .cse20) .cse17)) (.cse5 (not .cse0)) (.cse6 (and (or .cse25 .cse34 .cse20) .cse23)) (.cse7 (and .cse23 (or .cse25 .cse32 .cse33 .cse20))) (.cse4 (not .cse1)) (.cse8 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse9 (= |c_ULTIMATE.start_gcd_test_~b#1| 0))) (and (or (and (or .cse0 (and (or .cse1 .cse2) (or .cse3 .cse4))) (or .cse5 (and (or .cse6 .cse1) (or .cse7 .cse4)))) .cse8 .cse9) (<= |c_ULTIMATE.start_gcd_test_~b#1| 127) (or (let ((.cse28 (mod (+ .cse29 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (let ((.cse24 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse28) 256) 0))) (.cse26 (= .cse28 0)) (.cse12 (<= .cse28 127))) (let ((.cse13 (not .cse12)) (.cse18 (or .cse24 .cse20 .cse26)) (.cse16 (not .cse8)) (.cse19 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse28)) 256) 0)))) (and (or (let ((.cse11 (or .cse16 (and (or .cse19 .cse20) .cse17))) (.cse14 (or .cse16 (and .cse17 .cse18)))) (and (or (let ((.cse10 (or .cse3 .cse8))) (and (or (and .cse10 .cse11) .cse12) (or .cse13 (and .cse14 .cse10)))) .cse4) (or (let ((.cse15 (or .cse8 .cse2))) (and (or (and .cse11 .cse15) .cse12) (or (and .cse14 .cse15) .cse13))) .cse1))) .cse0) (or .cse5 (let ((.cse22 (or .cse16 (and .cse23 (or .cse25 .cse19 .cse20))))) (and (or (let ((.cse21 (or .cse6 .cse8))) (and (or .cse12 (and .cse21 .cse22)) (or (and (or .cse16 (and .cse23 (or .cse24 .cse25 .cse20 .cse26))) .cse21) .cse13))) .cse1) (or (let ((.cse27 (or .cse8 .cse7))) (and (or .cse13 (and (or .cse16 (and .cse23 .cse18)) .cse27)) (or (and .cse27 .cse22) .cse12))) .cse4)))))))) .cse9) (< 0 |c_ULTIMATE.start_gcd_test_~b#1|) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int)) (let ((.cse30 (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256))) (and (<= .cse30 127) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |c_ULTIMATE.start_gcd_test_~b#1|) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= |c_ULTIMATE.start_gcd_test_~a#1| .cse30) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int)) (let ((.cse31 (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256))) (and (not (<= .cse31 127)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |c_ULTIMATE.start_gcd_test_~b#1|) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (+ |c_ULTIMATE.start_gcd_test_~a#1| 256) .cse31) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0)))))))))) is different from true [2022-12-13 17:36:57,654 WARN L233 SmtUtils]: Spent 33.03s on a formula simplification. DAG size of input: 45 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:36:59,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:37:01,665 WARN L837 $PredicateComparison]: unable to prove that (and (or (not (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (not (<= |c_ULTIMATE.start_gcd_test_~a#1| 127)) (not (<= 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 128)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_12| Int) (|v_ULTIMATE.start_gcd_test_~a#1_14| Int)) (and (< 0 |v_ULTIMATE.start_gcd_test_~a#1_14|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_12|)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_12| |v_ULTIMATE.start_gcd_test_~a#1_14|) 0) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_14| |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod (mod (* 255 |v_ULTIMATE.start_gcd_test_~a#1_12|) 256) |v_ULTIMATE.start_gcd_test_~a#1_14|) 256)) (< |v_ULTIMATE.start_gcd_test_~a#1_12| 0))) (not (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2022-12-13 17:37:03,688 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse14 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse11 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse10 (mod .cse14 256))) (let ((.cse0 (= .cse10 0)) (.cse16 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) (.cse17 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse5 (not .cse11)) (.cse1 (= |c_ULTIMATE.start_gcd_test_~b#1| 0))) (and (or (not (<= 0 (+ |c_ULTIMATE.start_gcd_test_~b#1| 128))) (not .cse0) (not (<= |c_ULTIMATE.start_gcd_test_~b#1| 127)) .cse1) (or (let ((.cse15 (mod (+ .cse14 .cse16) 256))) (let ((.cse3 (<= .cse15 127))) (let ((.cse2 (<= .cse10 127)) (.cse4 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse15)) 256) 0))) (.cse7 (= .cse15 0)) (.cse8 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse15) 256) 0))) (.cse9 (not .cse3))) (and (or .cse2 (let ((.cse6 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse10)) 256) 0)) .cse11))) (and (or .cse3 (and (or .cse4 .cse5) .cse6)) (or (and .cse6 (or .cse7 .cse8 .cse5)) .cse9)))) (or (not .cse2) (let ((.cse13 (or .cse11 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse10) 256) 0)) .cse0)) (.cse12 (= .cse14 0))) (and (or (and (or .cse12 .cse4 .cse5) .cse13) .cse3) (or (and .cse13 (or .cse12 .cse7 .cse8 .cse5)) .cse9)))))))) .cse17 .cse1) (or (let ((.cse20 (mod (* |c_ULTIMATE.start_gcd_test_~a#1| 255) 256))) (let ((.cse18 (<= .cse20 127))) (and (let ((.cse19 (mod (mod .cse20 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not .cse18) (= 0 .cse19) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse19) 256) 0)))) (let ((.cse21 (mod (+ .cse20 (- 256)) |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) (mod (+ .cse21 .cse16) 256))) 256) 0)) .cse18 (= .cse21 0)))))) .cse17 .cse5 .cse1))))) is different from false [2022-12-13 17:37:05,692 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse14 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse11 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse10 (mod .cse14 256))) (let ((.cse0 (= .cse10 0)) (.cse16 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) (.cse17 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse5 (not .cse11)) (.cse1 (= |c_ULTIMATE.start_gcd_test_~b#1| 0))) (and (or (not (<= 0 (+ |c_ULTIMATE.start_gcd_test_~b#1| 128))) (not .cse0) (not (<= |c_ULTIMATE.start_gcd_test_~b#1| 127)) .cse1) (or (let ((.cse15 (mod (+ .cse14 .cse16) 256))) (let ((.cse3 (<= .cse15 127))) (let ((.cse2 (<= .cse10 127)) (.cse4 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse15)) 256) 0))) (.cse7 (= .cse15 0)) (.cse8 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse15) 256) 0))) (.cse9 (not .cse3))) (and (or .cse2 (let ((.cse6 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse10)) 256) 0)) .cse11))) (and (or .cse3 (and (or .cse4 .cse5) .cse6)) (or (and .cse6 (or .cse7 .cse8 .cse5)) .cse9)))) (or (not .cse2) (let ((.cse13 (or .cse11 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse10) 256) 0)) .cse0)) (.cse12 (= .cse14 0))) (and (or (and (or .cse12 .cse4 .cse5) .cse13) .cse3) (or (and .cse13 (or .cse12 .cse7 .cse8 .cse5)) .cse9)))))))) .cse17 .cse1) (or (let ((.cse20 (mod (* |c_ULTIMATE.start_gcd_test_~a#1| 255) 256))) (let ((.cse18 (<= .cse20 127))) (and (let ((.cse19 (mod (mod .cse20 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not .cse18) (= 0 .cse19) (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse19) 256) 0)))) (let ((.cse21 (mod (+ .cse20 (- 256)) |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) (mod (+ .cse21 .cse16) 256))) 256) 0)) .cse18 (= .cse21 0)))))) .cse17 .cse5 .cse1))))) is different from true [2022-12-13 17:37:07,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 17:37:07,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:37:07,701 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-12-13 17:37:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:37:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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 13 [2022-12-13 17:37:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:37:07,706 INFO L225 Difference]: With dead ends: 40 [2022-12-13 17:37:07,706 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 17:37:07,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 340.2s TimeCoverageRelationStatistics Valid=62, Invalid=176, Unknown=42, NotChecked=370, Total=650 [2022-12-13 17:37:07,707 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:37:07,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 250 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 5 Unknown, 126 Unchecked, 11.2s Time] [2022-12-13 17:37:07,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 17:37:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-12-13 17:37:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:37:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-12-13 17:37:07,712 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 13 [2022-12-13 17:37:07,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:37:07,712 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-12-13 17:37:07,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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) [2022-12-13 17:37:07,713 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-12-13 17:37:07,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 17:37:07,713 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:37:07,713 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:07,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:37:07,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:07,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:37:07,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:07,916 INFO L85 PathProgramCache]: Analyzing trace with hash 403427572, now seen corresponding path program 1 times [2022-12-13 17:37:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:07,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945690807] [2022-12-13 17:37:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:07,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:37:07,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541547239] [2022-12-13 17:37:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:07,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:07,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:07,950 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:07,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:37:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:08,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 17:37:08,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:37:08,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:53,707 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse27 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse16 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse28 (mod (+ .cse27 |c_ULTIMATE.start_gcd_test_~b#1|) 256)) (.cse29 (mod (+ .cse27 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse5 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse9 (<= .cse29 127)) (.cse3 (<= .cse28 127)) (.cse22 (forall ((|v_ULTIMATE.start_gcd_test_~a#1_21| Int)) (or (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_21| .cse28) 256) 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_21| |c_ULTIMATE.start_gcd_test_~b#1|)))) (.cse24 (= .cse28 0)) (.cse25 (forall ((|v_ULTIMATE.start_gcd_test_~a#1_21| Int)) (or (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_21| .cse29) 256) 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_21| |c_ULTIMATE.start_gcd_test_~b#1|)))) (.cse26 (= .cse29 0)) (.cse12 (not .cse16)) (.cse17 (mod .cse27 256))) (let ((.cse18 (<= .cse17 127)) (.cse11 (forall ((|v_ULTIMATE.start_gcd_test_~a#1_21| Int)) (or (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_21| (+ (- 256) .cse29)) 256) 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_21| |c_ULTIMATE.start_gcd_test_~b#1|)))) (.cse6 (or .cse25 .cse26 .cse12)) (.cse14 (or .cse22 .cse12 .cse24)) (.cse0 (not .cse3)) (.cse8 (not .cse9)) (.cse13 (not .cse5)) (.cse15 (forall ((|v_ULTIMATE.start_gcd_test_~a#1_21| Int)) (or (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_21| (+ (- 256) .cse28)) 256) 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_21| |c_ULTIMATE.start_gcd_test_~b#1|))))) (and (or (let ((.cse7 (or .cse16 (forall ((|v_ULTIMATE.start_gcd_test_~a#1_21| Int)) (or (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_21| (+ (- 256) .cse17)) 256) 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_21| |c_ULTIMATE.start_gcd_test_~b#1|)))))) (let ((.cse4 (or (and .cse7 (or .cse15 .cse12)) .cse13)) (.cse2 (or .cse13 (and .cse14 .cse7)))) (and (or (let ((.cse1 (or .cse5 (and .cse6 .cse7)))) (and (or .cse0 (and .cse1 .cse2)) (or .cse3 (and .cse4 .cse1)))) .cse8) (or .cse9 (let ((.cse10 (or .cse5 (and (or .cse11 .cse12) .cse7)))) (and (or (and .cse4 .cse10) .cse3) (or .cse0 (and .cse10 .cse2)))))))) .cse18) (or (not .cse18) (let ((.cse21 (or .cse16 (forall ((|v_ULTIMATE.start_gcd_test_~a#1_21| Int)) (or (not (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_21| .cse17) 256) 0)) (< |v_ULTIMATE.start_gcd_test_~a#1_21| |c_ULTIMATE.start_gcd_test_~b#1|))) (= .cse17 0))) (.cse23 (= .cse27 0))) (let ((.cse20 (or .cse13 (and .cse21 (or .cse23 .cse15 .cse12))))) (and (or (let ((.cse19 (or .cse5 (and .cse21 (or .cse23 .cse11 .cse12))))) (and (or .cse3 (and .cse19 .cse20)) (or .cse0 (and (or (and .cse21 (or .cse22 .cse23 .cse12 .cse24)) .cse13) .cse19)))) .cse9) (or (and (or (and .cse20 (or .cse5 (and (or .cse23 .cse25 .cse26 .cse12) .cse21))) .cse3) (or (and (or (and .cse6 .cse21) .cse5) (or .cse13 (and .cse21 .cse14))) .cse0)) .cse8)))))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) is different from false [2022-12-13 17:39:21,008 WARN L233 SmtUtils]: Spent 1.29m on a formula simplification. DAG size of input: 62 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:39:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 17:39:21,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:39:21,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945690807] [2022-12-13 17:39:21,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:39:21,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541547239] [2022-12-13 17:39:21,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541547239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:39:21,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:39:21,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2022-12-13 17:39:21,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660530074] [2022-12-13 17:39:21,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:39:21,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:39:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:39:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:39:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2022-12-13 17:39:21,041 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 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) [2022-12-13 17:39:37,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-12-13 17:39:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:39:37,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 83.2s TimeCoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2022-12-13 17:39:37,817 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:39:37,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 62 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 6 Unchecked, 0.3s Time] [2022-12-13 17:39:37,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 17:39:38,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:39:38,020 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:391) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 55 more [2022-12-13 17:39:38,030 INFO L158 Benchmark]: Toolchain (without parser) took 759869.07ms. Allocated memory is still 146.8MB. Free memory was 111.4MB in the beginning and 44.4MB in the end (delta: 67.0MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. [2022-12-13 17:39:38,030 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory was 83.0MB in the beginning and 82.9MB in the end (delta: 78.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:39:38,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.78ms. Allocated memory is still 146.8MB. Free memory was 111.4MB in the beginning and 99.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 17:39:38,031 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.72ms. Allocated memory is still 146.8MB. Free memory was 99.9MB in the beginning and 98.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:39:38,031 INFO L158 Benchmark]: Boogie Preprocessor took 17.83ms. Allocated memory is still 146.8MB. Free memory was 98.3MB in the beginning and 96.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:39:38,031 INFO L158 Benchmark]: RCFGBuilder took 257.70ms. Allocated memory is still 146.8MB. Free memory was 96.8MB in the beginning and 84.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 17:39:38,031 INFO L158 Benchmark]: TraceAbstraction took 759348.40ms. Allocated memory is still 146.8MB. Free memory was 84.1MB in the beginning and 44.4MB in the end (delta: 39.8MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2022-12-13 17:39:38,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory was 83.0MB in the beginning and 82.9MB in the end (delta: 78.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.78ms. Allocated memory is still 146.8MB. Free memory was 111.4MB in the beginning and 99.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.72ms. Allocated memory is still 146.8MB. Free memory was 99.9MB in the beginning and 98.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.83ms. Allocated memory is still 146.8MB. Free memory was 98.3MB in the beginning and 96.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 257.70ms. Allocated memory is still 146.8MB. Free memory was 96.8MB in the beginning and 84.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 759348.40ms. Allocated memory is still 146.8MB. Free memory was 84.1MB in the beginning and 44.4MB in the end (delta: 39.8MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8 --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 bef70c39331e78595b45dbc9116e80e68130a83e4d55fdf4189b866d036d57fe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:39:39,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:39:39,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:39:39,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:39:39,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:39:39,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:39:39,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:39:39,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:39:39,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:39:39,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:39:39,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:39:39,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:39:39,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:39:39,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:39:39,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:39:39,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:39:39,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:39:39,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:39:39,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:39:39,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:39:39,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:39:39,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:39:39,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:39:39,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:39:39,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:39:39,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:39:39,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:39:39,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:39:39,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:39:39,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:39:39,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:39:39,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:39:39,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:39:39,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:39:39,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:39:39,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:39:39,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:39:39,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:39:39,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:39:39,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:39:39,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:39:39,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 17:39:39,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:39:39,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:39:39,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:39:39,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:39:39,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:39:39,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:39:39,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:39:39,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:39:39,607 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:39:39,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:39:39,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:39:39,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:39:39,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:39:39,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:39:39,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:39:39,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:39:39,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 17:39:39,608 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 17:39:39,608 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 17:39:39,608 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:39:39,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:39:39,608 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:39:39,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:39:39,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:39:39,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:39:39,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:39:39,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:39:39,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:39:39,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:39:39,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:39:39,609 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 17:39:39,609 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 17:39:39,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:39:39,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:39:39,610 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:39:39,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:39:39,610 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 17:39:39,610 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:39:39,610 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bef70c39331e78595b45dbc9116e80e68130a83e4d55fdf4189b866d036d57fe [2022-12-13 17:39:39,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:39:39,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:39:39,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:39:39,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:39:39,837 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:39:39,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/gcd_1+newton_2_5.i [2022-12-13 17:39:42,372 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:39:42,539 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:39:42,539 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i [2022-12-13 17:39:42,546 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/data/0068fed0d/7d535bc07c7c49a193cf8ea321596ed2/FLAGbd68a149b [2022-12-13 17:39:42,928 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/data/0068fed0d/7d535bc07c7c49a193cf8ea321596ed2 [2022-12-13 17:39:42,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:39:42,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:39:42,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:39:42,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:39:42,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:39:42,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:39:42" (1/1) ... [2022-12-13 17:39:42,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4270d72e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:42, skipping insertion in model container [2022-12-13 17:39:42,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:39:42" (1/1) ... [2022-12-13 17:39:42,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:39:42,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:39:43,067 WARN L237 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_148ead1c-e743-4d02-82a1-213156eb6802/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i[1226,1239] [2022-12-13 17:39:43,083 WARN L237 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_148ead1c-e743-4d02-82a1-213156eb6802/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i[2807,2820] [2022-12-13 17:39:43,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:39:43,093 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:39:43,103 WARN L237 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_148ead1c-e743-4d02-82a1-213156eb6802/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i[1226,1239] [2022-12-13 17:39:43,109 WARN L237 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_148ead1c-e743-4d02-82a1-213156eb6802/sv-benchmarks/c/combinations/gcd_1+newton_2_5.i[2807,2820] [2022-12-13 17:39:43,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:39:43,120 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:39:43,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43 WrapperNode [2022-12-13 17:39:43,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:39:43,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:39:43,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:39:43,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:39:43,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,148 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2022-12-13 17:39:43,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:39:43,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:39:43,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:39:43,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:39:43,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,176 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:39:43,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:39:43,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:39:43,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:39:43,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (1/1) ... [2022-12-13 17:39:43,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:39:43,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:39:43,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:39:43,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:39:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:39:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 17:39:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-12-13 17:39:43,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-12-13 17:39:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-13 17:39:43,233 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-13 17:39:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:39:43,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:39:43,295 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:39:43,296 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:39:51,200 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:39:51,205 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:39:51,205 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:39:51,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:39:51 BoogieIcfgContainer [2022-12-13 17:39:51,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:39:51,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:39:51,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:39:51,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:39:51,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:39:42" (1/3) ... [2022-12-13 17:39:51,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49142ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:39:51, skipping insertion in model container [2022-12-13 17:39:51,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:39:43" (2/3) ... [2022-12-13 17:39:51,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49142ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:39:51, skipping insertion in model container [2022-12-13 17:39:51,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:39:51" (3/3) ... [2022-12-13 17:39:51,213 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_5.i [2022-12-13 17:39:51,233 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:39:51,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 17:39:51,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:39:51,283 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6cda8bd6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:39:51,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 17:39:51,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:39:51,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 17:39:51,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:39:51,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:39:51,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:39:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash -247750664, now seen corresponding path program 1 times [2022-12-13 17:39:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:39:51,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658394914] [2022-12-13 17:39:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:39:51,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:39:51,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:39:51,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 17:39:51,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 17:39:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:39:51,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 17:39:51,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:39:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:39:51,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:39:51,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:39:51,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658394914] [2022-12-13 17:39:51,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658394914] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:39:51,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:39:51,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:39:51,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309197404] [2022-12-13 17:39:51,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:39:51,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:39:51,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:39:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:39:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:39:51,424 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-12-13 17:39:51,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:39:51,440 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2022-12-13 17:39:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:39:51,441 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 [2022-12-13 17:39:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:39:51,449 INFO L225 Difference]: With dead ends: 66 [2022-12-13 17:39:51,449 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 17:39:51,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:39:51,454 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:39:51,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:39:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 17:39:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-13 17:39:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:39:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-12-13 17:39:51,479 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 11 [2022-12-13 17:39:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:39:51,479 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-12-13 17:39:51,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-12-13 17:39:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-12-13 17:39:51,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 17:39:51,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:39:51,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:39:51,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:39:51,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:39:51,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:39:51,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash -251444748, now seen corresponding path program 1 times [2022-12-13 17:39:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:39:51,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386733527] [2022-12-13 17:39:51,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:39:51,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:39:51,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:39:51,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 17:39:51,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 17:39:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:39:51,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:39:51,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:39:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:39:51,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:39:51,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:39:51,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386733527] [2022-12-13 17:39:51,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386733527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:39:51,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:39:51,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:39:51,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208323032] [2022-12-13 17:39:51,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:39:51,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:39:51,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:39:51,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:39:51,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:39:51,872 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-12-13 17:39:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:39:51,917 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-12-13 17:39:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:39:51,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2022-12-13 17:39:51,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:39:51,918 INFO L225 Difference]: With dead ends: 36 [2022-12-13 17:39:51,919 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 17:39:51,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:39:51,920 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:39:51,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:39:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 17:39:51,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-13 17:39:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:39:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-12-13 17:39:51,925 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-12-13 17:39:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:39:51,925 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-12-13 17:39:51,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-12-13 17:39:51,926 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-12-13 17:39:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 17:39:51,926 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:39:51,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:39:51,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 17:39:52,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:39:52,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:39:52,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:52,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1673157840, now seen corresponding path program 1 times [2022-12-13 17:39:52,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:39:52,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892338494] [2022-12-13 17:39:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:39:52,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:39:52,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:39:52,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 17:39:52,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 17:39:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:39:52,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:39:52,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:39:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:39:52,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:39:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:39:52,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:39:52,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892338494] [2022-12-13 17:39:52,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892338494] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:39:52,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:39:52,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-12-13 17:39:52,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874301823] [2022-12-13 17:39:52,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:39:52,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:39:52,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:39:52,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:39:52,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:39:52,660 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-12-13 17:39:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:39:53,042 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-12-13 17:39:53,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:39:53,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 [2022-12-13 17:39:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:39:53,044 INFO L225 Difference]: With dead ends: 36 [2022-12-13 17:39:53,044 INFO L226 Difference]: Without dead ends: 31 [2022-12-13 17:39:53,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:39:53,045 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:39:53,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:39:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-13 17:39:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-13 17:39:53,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:39:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-12-13 17:39:53,050 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-12-13 17:39:53,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:39:53,050 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-12-13 17:39:53,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2022-12-13 17:39:53,050 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-12-13 17:39:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 17:39:53,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:39:53,051 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:39:53,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 17:39:53,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:39:53,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:39:53,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:53,257 INFO L85 PathProgramCache]: Analyzing trace with hash -276630798, now seen corresponding path program 2 times [2022-12-13 17:39:53,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:39:53,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745723428] [2022-12-13 17:39:53,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:39:53,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:39:53,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:39:53,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 17:39:53,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 17:39:54,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:39:54,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:39:54,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 17:39:54,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:39:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:39:57,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:40:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:40:07,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:40:07,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745723428] [2022-12-13 17:40:07,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745723428] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:40:07,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:40:07,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2022-12-13 17:40:07,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749656662] [2022-12-13 17:40:07,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:40:07,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:40:07,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:40:07,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:40:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2022-12-13 17:40:07,320 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2022-12-13 17:40:09,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:40:12,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:40:23,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:40:23,830 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-12-13 17:40:23,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:40:23,837 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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 13 [2022-12-13 17:40:23,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:40:23,838 INFO L225 Difference]: With dead ends: 44 [2022-12-13 17:40:23,838 INFO L226 Difference]: Without dead ends: 32 [2022-12-13 17:40:23,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=66, Invalid=173, Unknown=1, NotChecked=0, Total=240 [2022-12-13 17:40:23,839 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:40:23,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 190 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-12-13 17:40:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-13 17:40:23,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-13 17:40:23,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:40:23,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-12-13 17:40:23,846 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 13 [2022-12-13 17:40:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:40:23,846 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-12-13 17:40:23,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2022-12-13 17:40:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-12-13 17:40:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 17:40:23,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:40:23,847 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:40:23,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 17:40:24,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:40:24,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:40:24,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:40:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash -326992466, now seen corresponding path program 1 times [2022-12-13 17:40:24,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:40:24,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462168135] [2022-12-13 17:40:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:40:24,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:40:24,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:40:24,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 17:40:24,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 17:40:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:40:24,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:40:24,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:40:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:40:24,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:40:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:40:25,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 17:40:25,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462168135] [2022-12-13 17:40:25,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462168135] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:40:25,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:40:25,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2022-12-13 17:40:25,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196524555] [2022-12-13 17:40:25,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:40:25,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:40:25,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 17:40:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:40:25,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:40:25,270 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-13 17:40:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:40:25,530 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-12-13 17:40:25,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:40:25,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 14 [2022-12-13 17:40:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:40:25,530 INFO L225 Difference]: With dead ends: 32 [2022-12-13 17:40:25,530 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 17:40:25,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:40:25,531 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:40:25,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:40:25,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 17:40:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-13 17:40:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:40:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-12-13 17:40:25,534 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2022-12-13 17:40:25,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:40:25,534 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-12-13 17:40:25,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-13 17:40:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-12-13 17:40:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 17:40:25,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:40:25,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:40:25,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 17:40:25,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:40:25,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:40:25,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:40:25,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1535073882, now seen corresponding path program 1 times [2022-12-13 17:40:25,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 17:40:25,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053700826] [2022-12-13 17:40:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:40:25,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 17:40:25,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 17:40:25,744 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 17:40:25,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_148ead1c-e743-4d02-82a1-213156eb6802/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process