./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_3_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc --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 61ffc5d3104f879fcd66a8ed550fe0d20a910c87b717c72a3dc729bb40cff29b --- 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-5e519f3 [2022-11-02 20:36:35,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:36:35,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:36:35,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:36:35,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:36:35,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:36:35,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:36:35,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:36:35,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:36:35,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:36:35,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:36:35,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:36:35,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:36:35,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:36:35,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:36:35,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:36:35,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:36:35,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:36:35,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:36:35,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:36:35,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:36:35,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:36:35,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:36:35,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:36:35,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:36:35,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:36:35,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:36:35,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:36:35,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:36:35,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:36:35,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:36:35,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:36:35,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:36:35,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:36:35,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:36:35,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:36:35,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:36:35,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:36:35,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:36:35,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:36:35,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:36:35,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:36:35,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:36:35,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:36:35,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:36:35,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:36:35,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:36:35,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:36:35,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:36:35,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:36:35,956 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:36:35,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:36:35,957 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:36:35,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:36:35,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:36:35,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:36:35,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:36:35,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:36:35,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:36:35,959 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:36:35,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:36:35,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:36:35,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:36:35,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:36:35,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:36:35,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:36:35,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:36:35,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:36:35,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:36:35,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:36:35,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:36:35,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:36:35,962 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:36:35,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:36:35,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:36:35,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61ffc5d3104f879fcd66a8ed550fe0d20a910c87b717c72a3dc729bb40cff29b [2022-11-02 20:36:36,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:36:36,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:36:36,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:36:36,302 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:36:36,303 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:36:36,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/gcd_1+newton_3_7.i [2022-11-02 20:36:36,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/data/f07a9bb9c/e40613a85d7d4dba896c7c642bda1422/FLAG3e492af68 [2022-11-02 20:36:36,916 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:36:36,917 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/sv-benchmarks/c/combinations/gcd_1+newton_3_7.i [2022-11-02 20:36:36,928 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/data/f07a9bb9c/e40613a85d7d4dba896c7c642bda1422/FLAG3e492af68 [2022-11-02 20:36:37,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/data/f07a9bb9c/e40613a85d7d4dba896c7c642bda1422 [2022-11-02 20:36:37,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:36:37,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:36:37,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:36:37,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:36:37,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:36:37,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c47a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37, skipping insertion in model container [2022-11-02 20:36:37,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:36:37,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:36:37,516 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/sv-benchmarks/c/combinations/gcd_1+newton_3_7.i[1226,1239] [2022-11-02 20:36:37,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/sv-benchmarks/c/combinations/gcd_1+newton_3_7.i[2828,2841] [2022-11-02 20:36:37,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:36:37,557 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:36:37,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/sv-benchmarks/c/combinations/gcd_1+newton_3_7.i[1226,1239] [2022-11-02 20:36:37,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/sv-benchmarks/c/combinations/gcd_1+newton_3_7.i[2828,2841] [2022-11-02 20:36:37,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:36:37,602 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:36:37,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37 WrapperNode [2022-11-02 20:36:37,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:36:37,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:36:37,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:36:37,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:36:37,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,645 INFO L138 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 82 [2022-11-02 20:36:37,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:36:37,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:36:37,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:36:37,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:36:37,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:36:37,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:36:37,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:36:37,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:36:37,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (1/1) ... [2022-11-02 20:36:37,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:36:37,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:37,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:36:37,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:36:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:36:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-02 20:36:37,771 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-02 20:36:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-02 20:36:37,773 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-02 20:36:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:36:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:36:37,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:36:37,861 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:36:37,864 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:36:38,096 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:36:38,119 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:36:38,119 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:36:38,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:36:38 BoogieIcfgContainer [2022-11-02 20:36:38,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:36:38,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:36:38,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:36:38,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:36:38,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:36:37" (1/3) ... [2022-11-02 20:36:38,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f01b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:36:38, skipping insertion in model container [2022-11-02 20:36:38,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:37" (2/3) ... [2022-11-02 20:36:38,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f01b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:36:38, skipping insertion in model container [2022-11-02 20:36:38,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:36:38" (3/3) ... [2022-11-02 20:36:38,131 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_3_7.i [2022-11-02 20:36:38,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:36:38,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:36:38,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:36:38,258 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;@4c88976, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:36:38,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:36:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:36:38,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:36:38,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:38,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:38,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:38,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:38,282 INFO L85 PathProgramCache]: Analyzing trace with hash -247750664, now seen corresponding path program 1 times [2022-11-02 20:36:38,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:38,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100106889] [2022-11-02 20:36:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:38,390 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:36:38,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024043940] [2022-11-02 20:36:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:38,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:38,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:38,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:36:38,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:36:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:38,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:36:38,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:38,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:36:38,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:38,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100106889] [2022-11-02 20:36:38,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:36:38,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024043940] [2022-11-02 20:36:38,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024043940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:38,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:38,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:36:38,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959625604] [2022-11-02 20:36:38,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:38,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:36:38,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:36:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:36:38,618 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2022-11-02 20:36:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:38,655 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2022-11-02 20:36:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:36:38,658 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 [2022-11-02 20:36:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:38,667 INFO L225 Difference]: With dead ends: 72 [2022-11-02 20:36:38,668 INFO L226 Difference]: Without dead ends: 32 [2022-11-02 20:36:38,671 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 [2022-11-02 20:36:38,682 INFO L413 NwaCegarLoop]: 48 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, 48 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 [2022-11-02 20:36:38,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:36:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-02 20:36:38,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-02 20:36:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:36:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-11-02 20:36:38,743 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2022-11-02 20:36:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:38,744 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-11-02 20:36:38,744 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) [2022-11-02 20:36:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-11-02 20:36:38,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:36:38,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:38,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:38,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:38,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 20:36:38,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:38,975 INFO L85 PathProgramCache]: Analyzing trace with hash -251444748, now seen corresponding path program 1 times [2022-11-02 20:36:38,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:38,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612537785] [2022-11-02 20:36:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:38,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:38,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:36:38,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901714431] [2022-11-02 20:36:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:38,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:38,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:38,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:36:39,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:36:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:39,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:36:39,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:39,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:36:39,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:39,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612537785] [2022-11-02 20:36:39,171 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:36:39,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901714431] [2022-11-02 20:36:39,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901714431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:39,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:39,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:36:39,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848560123] [2022-11-02 20:36:39,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:39,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:36:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:36:39,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:36:39,175 INFO L87 Difference]: Start difference. First operand 32 states and 38 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) [2022-11-02 20:36:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:39,201 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-11-02 20:36:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:36:39,202 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 [2022-11-02 20:36:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:39,203 INFO L225 Difference]: With dead ends: 39 [2022-11-02 20:36:39,203 INFO L226 Difference]: Without dead ends: 33 [2022-11-02 20:36:39,203 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 [2022-11-02 20:36:39,204 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 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 [2022-11-02 20:36:39,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:36:39,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-02 20:36:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-02 20:36:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:36:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-02 20:36:39,212 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-02 20:36:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:39,213 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-02 20:36:39,213 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) [2022-11-02 20:36:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-02 20:36:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:36:39,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:39,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:39,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:39,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:39,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:39,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1673157840, now seen corresponding path program 1 times [2022-11-02 20:36:39,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:39,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086422062] [2022-11-02 20:36:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:39,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:39,451 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:36:39,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355109630] [2022-11-02 20:36:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:39,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:39,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:39,453 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:36:39,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:36:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:39,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:36:39,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:39,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:39,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086422062] [2022-11-02 20:36:39,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:36:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355109630] [2022-11-02 20:36:39,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355109630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:39,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:36:39,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-02 20:36:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530073910] [2022-11-02 20:36:39,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:39,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:36:39,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:39,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:36:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:36:39,659 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-11-02 20:36:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:39,754 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-02 20:36:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:36:39,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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 [2022-11-02 20:36:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:39,760 INFO L225 Difference]: With dead ends: 39 [2022-11-02 20:36:39,761 INFO L226 Difference]: Without dead ends: 34 [2022-11-02 20:36:39,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:36:39,762 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:39,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 153 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:36:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-02 20:36:39,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-02 20:36:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:36:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-02 20:36:39,786 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2022-11-02 20:36:39,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:39,788 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-02 20:36:39,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2022-11-02 20:36:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-02 20:36:39,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:36:39,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:39,789 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:39,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:40,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:40,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:40,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:40,006 INFO L85 PathProgramCache]: Analyzing trace with hash -276630798, now seen corresponding path program 2 times [2022-11-02 20:36:40,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:40,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390223997] [2022-11-02 20:36:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:40,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:40,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:36:40,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760370900] [2022-11-02 20:36:40,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:36:40,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:36:40,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:40,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:36:40,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffc9e04d-cb91-4fd1-b0d2-a03de433431e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:36:48,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:36:48,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:36:48,082 WARN L261 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:36:48,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:47,152 WARN L833 $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 [2022-11-02 20:38:05,990 WARN L833 $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 [2022-11-02 20:38:28,116 WARN L833 $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 [2022-11-02 20:38:48,239 WARN L833 $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 [2022-11-02 20:38:50,244 WARN L855 $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 [2022-11-02 20:39:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-02 20:39:06,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:36,610 WARN L234 SmtUtils]: Spent 1.04m on a formula simplification that was a NOOP. DAG size: 112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:41:15,101 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse19 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse20 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse29 (mod (+ .cse19 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256)) (.cse28 (mod (+ .cse19 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (let ((.cse21 (mod .cse19 256)) (.cse11 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse5 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse28) 256) 0))) (.cse8 (= .cse28 0)) (.cse0 (<= .cse28 127)) (.cse12 (<= .cse29 127)) (.cse15 (= .cse29 0)) (.cse16 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse29) 256) 0))) (.cse7 (not .cse20))) (let ((.cse14 (or .cse15 .cse16 .cse7)) (.cse17 (not .cse12)) (.cse9 (not .cse0)) (.cse10 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse29)) 256) 0))) (.cse13 (or .cse5 .cse7 .cse8)) (.cse3 (not .cse11)) (.cse18 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse28)) 256) 0))) (.cse22 (<= .cse21 127))) (and (or (let ((.cse4 (or .cse20 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse21) 256) 0)) (= .cse21 0))) (.cse6 (= .cse19 0))) (let ((.cse2 (or .cse3 (and .cse4 (or .cse6 .cse18 .cse7))))) (and (or (let ((.cse1 (or (and (or .cse6 .cse10 .cse7) .cse4) .cse11))) (and (or .cse0 (and .cse1 .cse2)) (or (and (or .cse3 (and .cse4 (or .cse5 .cse6 .cse7 .cse8))) .cse1) .cse9))) .cse12) (or (and (or (and (or .cse3 (and .cse4 .cse13)) (or (and .cse4 .cse14) .cse11)) .cse9) (or (and (or .cse11 (and .cse4 (or .cse6 .cse15 .cse16 .cse7))) .cse2) .cse0)) .cse17)))) (not .cse22)) (or (let ((.cse26 (or (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse21)) 256) 0)) .cse20))) (let ((.cse24 (or .cse3 (and (or .cse18 .cse7) .cse26))) (.cse25 (or .cse3 (and .cse26 .cse13)))) (and (or (let ((.cse23 (or (and .cse26 .cse14) .cse11))) (and (or (and .cse23 .cse24) .cse0) (or .cse9 (and .cse25 .cse23)))) .cse17) (or (let ((.cse27 (or .cse11 (and (or .cse10 .cse7) .cse26)))) (and (or (and .cse24 .cse27) .cse0) (or (and .cse25 .cse27) .cse9))) .cse12)))) .cse22)))))) is different from true