./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro --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 f1a378db9c8e9c75f21e4ff39c56b4f3e8fbe3be2186b700f5c564e27346aa95 --- 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-8393723 [2022-11-18 18:37:20,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:37:20,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:37:20,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:37:20,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:37:20,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:37:20,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:37:20,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:37:20,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:37:20,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:37:20,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:37:20,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:37:20,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:37:20,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:37:20,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:37:20,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:37:20,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:37:20,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:37:20,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:37:20,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:37:20,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:37:20,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:37:20,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:37:20,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:37:20,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:37:20,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:37:20,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:37:20,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:37:20,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:37:20,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:37:20,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:37:20,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:37:20,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:37:20,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:37:20,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:37:20,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:37:20,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:37:20,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:37:20,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:37:20,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:37:20,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:37:20,774 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:37:20,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:37:20,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:37:20,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:37:20,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:37:20,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:37:20,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:37:20,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:37:20,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:37:20,835 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:37:20,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:37:20,837 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:37:20,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:37:20,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:37:20,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:37:20,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:37:20,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:37:20,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:37:20,839 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:37:20,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:37:20,840 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:37:20,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:37:20,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:37:20,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:37:20,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:37:20,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:37:20,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:37:20,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:37:20,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:37:20,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:37:20,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:37:20,845 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:37:20,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:37:20,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:37:20,846 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1a378db9c8e9c75f21e4ff39c56b4f3e8fbe3be2186b700f5c564e27346aa95 [2022-11-18 18:37:21,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:37:21,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:37:21,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:37:21,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:37:21,281 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:37:21,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/gcd_3+newton_3_3.i [2022-11-18 18:37:21,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/data/f78caec2e/37f343ea5d044cda94b9a47ef5ad025f/FLAGa04edd8e5 [2022-11-18 18:37:22,066 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:37:22,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/sv-benchmarks/c/combinations/gcd_3+newton_3_3.i [2022-11-18 18:37:22,076 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/data/f78caec2e/37f343ea5d044cda94b9a47ef5ad025f/FLAGa04edd8e5 [2022-11-18 18:37:22,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/data/f78caec2e/37f343ea5d044cda94b9a47ef5ad025f [2022-11-18 18:37:22,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:37:22,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:37:22,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:37:22,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:37:22,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:37:22,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e321f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22, skipping insertion in model container [2022-11-18 18:37:22,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:37:22,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:37:22,725 WARN L234 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/sv-benchmarks/c/combinations/gcd_3+newton_3_3.i[1226,1239] [2022-11-18 18:37:22,758 WARN L234 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/sv-benchmarks/c/combinations/gcd_3+newton_3_3.i[2862,2875] [2022-11-18 18:37:22,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:37:22,771 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:37:22,789 WARN L234 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/sv-benchmarks/c/combinations/gcd_3+newton_3_3.i[1226,1239] [2022-11-18 18:37:22,804 WARN L234 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/sv-benchmarks/c/combinations/gcd_3+newton_3_3.i[2862,2875] [2022-11-18 18:37:22,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:37:22,822 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:37:22,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22 WrapperNode [2022-11-18 18:37:22,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:37:22,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:37:22,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:37:22,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:37:22,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,881 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2022-11-18 18:37:22,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:37:22,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:37:22,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:37:22,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:37:22,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,912 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:37:22,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:37:22,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:37:22,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:37:22,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (1/1) ... [2022-11-18 18:37:22,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:37:22,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:22,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:37:22,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:37:23,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:37:23,030 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-18 18:37:23,030 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-18 18:37:23,030 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:37:23,030 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:37:23,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:37:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:37:23,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:37:23,129 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:37:23,136 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:37:23,538 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:37:23,550 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:37:23,551 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:37:23,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:37:23 BoogieIcfgContainer [2022-11-18 18:37:23,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:37:23,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:37:23,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:37:23,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:37:23,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:37:22" (1/3) ... [2022-11-18 18:37:23,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387693a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:37:23, skipping insertion in model container [2022-11-18 18:37:23,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:22" (2/3) ... [2022-11-18 18:37:23,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387693a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:37:23, skipping insertion in model container [2022-11-18 18:37:23,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:37:23" (3/3) ... [2022-11-18 18:37:23,576 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_3.i [2022-11-18 18:37:23,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:37:23,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:37:23,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:37:23,682 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;@55323f54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:37:23,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:37:23,689 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) [2022-11-18 18:37:23,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:37:23,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:23,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:23,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:37:23,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:23,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-18 18:37:23,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:23,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492369932] [2022-11-18 18:37:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:23,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:24,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:24,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492369932] [2022-11-18 18:37:24,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492369932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:24,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:24,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:24,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052022025] [2022-11-18 18:37:24,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:24,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:37:24,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:24,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:37:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:37:24,274 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 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:24,363 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2022-11-18 18:37:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:37:24,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:37:24,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:24,382 INFO L225 Difference]: With dead ends: 96 [2022-11-18 18:37:24,395 INFO L226 Difference]: Without dead ends: 39 [2022-11-18 18:37:24,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:37:24,404 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 23 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:24,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 134 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:37:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-18 18:37:24,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-18 18:37:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-11-18 18:37:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-18 18:37:24,461 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2022-11-18 18:37:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:24,462 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-18 18:37:24,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-18 18:37:24,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:37:24,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:24,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:24,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:37:24,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:37:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:24,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1776235347, now seen corresponding path program 1 times [2022-11-18 18:37:24,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:24,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090483583] [2022-11-18 18:37:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:24,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:24,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:24,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090483583] [2022-11-18 18:37:24,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090483583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:24,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:24,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:37:24,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236304660] [2022-11-18 18:37:24,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:24,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:24,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:24,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:37:24,876 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:24,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:24,986 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-18 18:37:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:37:24,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:37:24,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:24,988 INFO L225 Difference]: With dead ends: 39 [2022-11-18 18:37:24,988 INFO L226 Difference]: Without dead ends: 33 [2022-11-18 18:37:24,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:37:24,991 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:24,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 155 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:37:24,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-18 18:37:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-18 18:37:24,999 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) [2022-11-18 18:37:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-18 18:37:25,001 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-18 18:37:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:25,002 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-18 18:37:25,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-18 18:37:25,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:37:25,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:25,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:25,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:37:25,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:37:25,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-11-18 18:37:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:25,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523174265] [2022-11-18 18:37:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:25,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:25,023 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:37:25,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911675025] [2022-11-18 18:37:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:25,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:25,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:25,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:37:25,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:37:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:25,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:37:25,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:36,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:47,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:47,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523174265] [2022-11-18 18:37:47,928 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:37:47,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911675025] [2022-11-18 18:37:47,928 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-18 18:37:47,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-11-18 18:37:47,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:37:48,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 18:37:48,130 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:67) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) 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.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) 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) ... 54 more [2022-11-18 18:37:48,136 INFO L158 Benchmark]: Toolchain (without parser) took 25715.17ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 94.1MB in the beginning and 94.8MB in the end (delta: -772.8kB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2022-11-18 18:37:48,137 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 130.0MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:37:48,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.08ms. Allocated memory is still 130.0MB. Free memory was 93.9MB in the beginning and 105.0MB in the end (delta: -11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:37:48,138 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.49ms. Allocated memory is still 130.0MB. Free memory was 105.0MB in the beginning and 103.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:37:48,138 INFO L158 Benchmark]: Boogie Preprocessor took 33.73ms. Allocated memory is still 130.0MB. Free memory was 103.0MB in the beginning and 101.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:37:48,139 INFO L158 Benchmark]: RCFGBuilder took 637.52ms. Allocated memory is still 130.0MB. Free memory was 101.7MB in the beginning and 89.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 18:37:48,140 INFO L158 Benchmark]: TraceAbstraction took 24567.11ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 88.4MB in the beginning and 94.8MB in the end (delta: -6.5MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-11-18 18:37:48,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 130.0MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.08ms. Allocated memory is still 130.0MB. Free memory was 93.9MB in the beginning and 105.0MB in the end (delta: -11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.49ms. Allocated memory is still 130.0MB. Free memory was 105.0MB in the beginning and 103.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.73ms. Allocated memory is still 130.0MB. Free memory was 103.0MB in the beginning and 101.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 637.52ms. Allocated memory is still 130.0MB. Free memory was 101.7MB in the beginning and 89.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 24567.11ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 88.4MB in the beginning and 94.8MB in the end (delta: -6.5MB). Peak memory consumption was 22.4MB. 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro --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 f1a378db9c8e9c75f21e4ff39c56b4f3e8fbe3be2186b700f5c564e27346aa95 --- 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-8393723 [2022-11-18 18:37:50,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:37:50,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:37:50,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:37:50,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:37:50,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:37:50,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:37:50,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:37:50,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:37:50,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:37:50,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:37:50,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:37:50,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:37:50,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:37:50,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:37:50,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:37:50,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:37:50,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:37:50,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:37:50,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:37:50,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:37:50,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:37:50,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:37:50,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:37:50,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:37:50,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:37:50,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:37:50,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:37:50,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:37:50,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:37:50,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:37:50,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:37:50,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:37:50,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:37:50,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:37:50,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:37:50,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:37:50,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:37:50,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:37:50,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:37:50,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:37:50,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-18 18:37:50,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:37:50,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:37:50,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:37:50,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:37:50,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:37:50,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:37:50,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:37:50,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:37:50,995 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:37:50,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:37:50,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:37:50,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:37:50,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:37:50,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:37:50,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:37:50,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:37:50,999 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:37:50,999 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 18:37:50,999 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 18:37:51,000 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:37:51,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:37:51,000 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:37:51,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:37:51,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:37:51,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:37:51,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:37:51,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:37:51,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:37:51,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:37:51,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:37:51,004 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 18:37:51,004 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 18:37:51,005 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:37:51,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:37:51,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:37:51,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 18:37:51,006 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1a378db9c8e9c75f21e4ff39c56b4f3e8fbe3be2186b700f5c564e27346aa95 [2022-11-18 18:37:51,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:37:51,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:37:51,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:37:51,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:37:51,565 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:37:51,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/gcd_3+newton_3_3.i [2022-11-18 18:37:51,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/data/ba0a51fdd/bf5d26bb12684de59027dbf813ebd693/FLAGabecfe0e3 [2022-11-18 18:37:52,286 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:37:52,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/sv-benchmarks/c/combinations/gcd_3+newton_3_3.i [2022-11-18 18:37:52,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/data/ba0a51fdd/bf5d26bb12684de59027dbf813ebd693/FLAGabecfe0e3 [2022-11-18 18:37:52,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/data/ba0a51fdd/bf5d26bb12684de59027dbf813ebd693 [2022-11-18 18:37:52,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:37:52,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:37:52,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:37:52,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:37:52,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:37:52,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:37:52" (1/1) ... [2022-11-18 18:37:52,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489451e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:52, skipping insertion in model container [2022-11-18 18:37:52,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:37:52" (1/1) ... [2022-11-18 18:37:52,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:37:52,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:37:52,903 WARN L234 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/sv-benchmarks/c/combinations/gcd_3+newton_3_3.i[1226,1239] [2022-11-18 18:37:52,936 WARN L234 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/sv-benchmarks/c/combinations/gcd_3+newton_3_3.i[2862,2875] [2022-11-18 18:37:52,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:37:52,954 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:37:52,985 WARN L234 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/sv-benchmarks/c/combinations/gcd_3+newton_3_3.i[1226,1239] [2022-11-18 18:37:53,000 WARN L234 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_cae14671-eab2-496d-b06a-0a2e9bc317bf/sv-benchmarks/c/combinations/gcd_3+newton_3_3.i[2862,2875] [2022-11-18 18:37:53,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:37:53,039 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:37:53,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53 WrapperNode [2022-11-18 18:37:53,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:37:53,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:37:53,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:37:53,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:37:53,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,151 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-18 18:37:53,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:37:53,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:37:53,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:37:53,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:37:53,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,225 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:37:53,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:37:53,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:37:53,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:37:53,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:37:53,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:53,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:37:53,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:37:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:37:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 18:37:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-18 18:37:53,360 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-18 18:37:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:37:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:37:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:37:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:37:53,519 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:37:53,524 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:38:05,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:38:05,014 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:38:05,014 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:38:05,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:05 BoogieIcfgContainer [2022-11-18 18:38:05,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:38:05,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:38:05,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:38:05,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:38:05,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:37:52" (1/3) ... [2022-11-18 18:38:05,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b83dbf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:05, skipping insertion in model container [2022-11-18 18:38:05,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53" (2/3) ... [2022-11-18 18:38:05,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b83dbf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:05, skipping insertion in model container [2022-11-18 18:38:05,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:05" (3/3) ... [2022-11-18 18:38:05,035 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_3.i [2022-11-18 18:38:05,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:38:05,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:38:05,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:38:05,142 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;@44668f10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:38:05,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:38:05,155 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) [2022-11-18 18:38:05,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:38:05,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:05,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:05,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:05,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-18 18:38:05,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:05,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752943896] [2022-11-18 18:38:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:05,203 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 [2022-11-18 18:38:05,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:05,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:38:05,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:38:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:05,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:38:05,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:05,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:05,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:05,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752943896] [2022-11-18 18:38:05,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752943896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:05,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:05,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:05,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321877557] [2022-11-18 18:38:05,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:05,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:05,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:05,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:05,706 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 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) [2022-11-18 18:38:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:05,764 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-11-18 18:38:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:05,771 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 [2022-11-18 18:38:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:05,781 INFO L225 Difference]: With dead ends: 74 [2022-11-18 18:38:05,781 INFO L226 Difference]: Without dead ends: 33 [2022-11-18 18:38:05,786 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 [2022-11-18 18:38:05,793 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:05,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-18 18:38:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-18 18:38:05,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-18 18:38:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 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) [2022-11-18 18:38:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-18 18:38:05,855 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-18 18:38:05,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:05,856 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-18 18:38:05,857 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) [2022-11-18 18:38:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-18 18:38:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:38:05,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:05,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:05,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:38:06,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:38:06,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:06,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-18 18:38:06,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:06,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970127627] [2022-11-18 18:38:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:06,077 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 [2022-11-18 18:38:06,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:06,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:38:06,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:38:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:06,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:38:06,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:06,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:06,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:06,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970127627] [2022-11-18 18:38:06,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970127627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:06,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:06,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:38:06,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877577149] [2022-11-18 18:38:06,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:06,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:06,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:06,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:06,370 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:06,573 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-11-18 18:38:06,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:38:06,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:38:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:06,577 INFO L225 Difference]: With dead ends: 49 [2022-11-18 18:38:06,579 INFO L226 Difference]: Without dead ends: 40 [2022-11-18 18:38:06,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:06,582 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:06,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 103 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:06,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-18 18:38:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-11-18 18:38:06,597 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) [2022-11-18 18:38:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-18 18:38:06,600 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-18 18:38:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:06,603 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-18 18:38:06,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-18 18:38:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:38:06,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:06,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:06,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:06,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:38:06,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:06,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:06,822 INFO L85 PathProgramCache]: Analyzing trace with hash -743724587, now seen corresponding path program 1 times [2022-11-18 18:38:06,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:06,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608298960] [2022-11-18 18:38:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:06,823 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 [2022-11-18 18:38:06,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:06,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:38:06,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:38:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:06,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:38:06,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:07,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:07,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:07,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608298960] [2022-11-18 18:38:07,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608298960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:07,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:07,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:38:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504216429] [2022-11-18 18:38:07,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:07,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:38:07,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:07,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:38:07,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:07,536 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2022-11-18 18:38:08,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:08,373 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-18 18:38:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:38:08,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 [2022-11-18 18:38:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:08,379 INFO L225 Difference]: With dead ends: 40 [2022-11-18 18:38:08,380 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 18:38:08,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:38:08,382 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:08,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 185 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:38:08,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 18:38:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-18 18:38:08,398 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) [2022-11-18 18:38:08,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-18 18:38:08,399 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-18 18:38:08,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:08,400 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-18 18:38:08,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2022-11-18 18:38:08,401 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-18 18:38:08,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:38:08,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:08,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:08,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:08,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:38:08,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-11-18 18:38:08,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:08,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343382088] [2022-11-18 18:38:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:08,604 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 [2022-11-18 18:38:08,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:08,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:38:08,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:38:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:08,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:38:08,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:12,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:12,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:32,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:32,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343382088] [2022-11-18 18:38:32,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343382088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:32,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:32,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-18 18:38:32,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139681728] [2022-11-18 18:38:32,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:32,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:38:32,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:32,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:38:32,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=238, Unknown=5, NotChecked=0, Total=306 [2022-11-18 18:38:32,061 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:37,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:37,400 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-11-18 18:38:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:38:37,401 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:38:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:37,402 INFO L225 Difference]: With dead ends: 46 [2022-11-18 18:38:37,402 INFO L226 Difference]: Without dead ends: 36 [2022-11-18 18:38:37,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=72, Invalid=264, Unknown=6, NotChecked=0, Total=342 [2022-11-18 18:38:37,405 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:37,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 265 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 14 Unchecked, 0.3s Time] [2022-11-18 18:38:37,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-18 18:38:37,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-11-18 18:38:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 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) [2022-11-18 18:38:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-11-18 18:38:37,415 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2022-11-18 18:38:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:37,415 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-11-18 18:38:37,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-11-18 18:38:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:38:37,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:37,417 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:37,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:37,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:38:37,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:37,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:37,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2052984139, now seen corresponding path program 1 times [2022-11-18 18:38:37,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:37,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959691786] [2022-11-18 18:38:37,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:37,633 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 [2022-11-18 18:38:37,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:37,635 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:38:37,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:38:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:38,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:38:38,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:51,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:36,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:39:36,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959691786] [2022-11-18 18:39:36,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959691786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:39:36,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:36,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2022-11-18 18:39:36,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506694480] [2022-11-18 18:39:36,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:36,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 18:39:36,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:39:36,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 18:39:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=269, Unknown=4, NotChecked=0, Total=342 [2022-11-18 18:39:36,671 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2022-11-18 18:39:41,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:43,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 18:39:55,746 WARN L233 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 36 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:39:55,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:55,807 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-18 18:39:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:39:55,808 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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 [2022-11-18 18:39:55,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:55,809 INFO L225 Difference]: With dead ends: 50 [2022-11-18 18:39:55,809 INFO L226 Difference]: Without dead ends: 40 [2022-11-18 18:39:55,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 65.5s TimeCoverageRelationStatistics Valid=86, Invalid=330, Unknown=4, NotChecked=0, Total=420 [2022-11-18 18:39:55,811 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:55,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 379 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 1 Unknown, 28 Unchecked, 4.8s Time] [2022-11-18 18:39:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-18 18:39:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-11-18 18:39:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 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) [2022-11-18 18:39:55,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-11-18 18:39:55,825 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 13 [2022-11-18 18:39:55,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:55,825 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-11-18 18:39:55,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2022-11-18 18:39:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-11-18 18:39:55,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:39:55,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:55,827 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:55,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:56,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:39:56,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:56,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:56,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1518646018, now seen corresponding path program 2 times [2022-11-18 18:39:56,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:39:56,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204999523] [2022-11-18 18:39:56,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:39:56,042 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 [2022-11-18 18:39:56,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:39:56,043 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:39:56,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:40:01,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:40:01,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:40:01,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:40:01,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:30,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:24,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:42:24,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204999523] [2022-11-18 18:42:24,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204999523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:24,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:24,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-18 18:42:24,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568680068] [2022-11-18 18:42:24,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:24,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:42:24,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:42:24,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:42:24,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=364, Unknown=28, NotChecked=0, Total=462 [2022-11-18 18:42:24,747 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:27,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 18:42:44,621 WARN L233 SmtUtils]: Spent 11.42s on a formula simplification. DAG size of input: 45 DAG size of output: 3 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:43:08,853 WARN L233 SmtUtils]: Spent 22.09s on a formula simplification. DAG size of input: 27 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:43:20,673 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 35 DAG size of output: 17 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:43:47,880 WARN L233 SmtUtils]: Spent 21.80s on a formula simplification. DAG size of input: 35 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:44:22,714 WARN L233 SmtUtils]: Spent 18.29s on a formula simplification. DAG size of input: 35 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:45:21,001 WARN L233 SmtUtils]: Spent 38.22s on a formula simplification. DAG size of input: 42 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:45:45,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:45,237 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-11-18 18:45:45,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:45:45,238 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:45:45,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:45,239 INFO L225 Difference]: With dead ends: 52 [2022-11-18 18:45:45,239 INFO L226 Difference]: Without dead ends: 42 [2022-11-18 18:45:45,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 312.5s TimeCoverageRelationStatistics Valid=161, Invalid=786, Unknown=45, NotChecked=0, Total=992 [2022-11-18 18:45:45,241 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:45,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 421 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 29 Unchecked, 3.0s Time] [2022-11-18 18:45:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-18 18:45:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2022-11-18 18:45:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 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) [2022-11-18 18:45:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-11-18 18:45:45,253 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 14 [2022-11-18 18:45:45,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:45,253 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-11-18 18:45:45,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:45:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-11-18 18:45:45,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 18:45:45,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:45,255 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:45,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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)] Forceful destruction successful, exit code 0 [2022-11-18 18:45:45,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 18:45:45,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash 571830174, now seen corresponding path program 3 times [2022-11-18 18:45:45,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:45:45,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933971970] [2022-11-18 18:45:45,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:45:45,473 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 [2022-11-18 18:45:45,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:45:45,474 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 18:45:45,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cae14671-eab2-496d-b06a-0a2e9bc317bf/bin/uautomizer-TMbwUNV5ro/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 (8)] Waiting until timeout for monitored process [2022-11-18 18:46:18,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 18:46:18,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:46:18,958 WARN L261 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:46:18,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:47:21,703 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:48:51,656 WARN L233 SmtUtils]: Spent 10.56s 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) [2022-11-18 18:49:11,382 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~b#1_29| (_ BitVec 8)) (|ULTIMATE.start_main1_~x~0#1| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~b#1_29|))) (let ((.cse2 ((_ sign_extend 24) |ULTIMATE.start_main1_~x~0#1|)) (.cse6 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse6))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse6 .cse5))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse0))))) (and (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1))) (_ bv0 32)) (not (= (_ bv0 32) .cse0)) (not (bvsge .cse2 .cse1)) (bvslt .cse3 (_ bv0 32)) (not (bvslt .cse2 (_ bv0 32))))))))))) is different from false [2022-11-18 18:49:13,408 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~b#1_29| (_ BitVec 8)) (|ULTIMATE.start_main1_~x~0#1| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~b#1_29|))) (let ((.cse2 ((_ sign_extend 24) |ULTIMATE.start_main1_~x~0#1|)) (.cse6 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse6))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse6 .cse5))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse0))))) (and (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1))) (_ bv0 32)) (not (= (_ bv0 32) .cse0)) (not (bvsge .cse2 .cse1)) (bvslt .cse3 (_ bv0 32)) (not (bvslt .cse2 (_ bv0 32))))))))))) is different from true [2022-11-18 18:49:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:13,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:52:20,200 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)