./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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_98030008-632c-446a-add3-6afd2dcd4e2f/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 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 --- 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 18:38:20,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:38:20,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:38:20,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:38:20,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:38:20,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:38:20,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:38:20,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:38:20,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:38:20,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:38:20,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:38:20,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:38:20,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:38:20,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:38:20,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:38:20,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:38:20,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:38:20,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:38:20,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:38:20,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:38:20,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:38:20,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:38:20,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:38:20,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:38:20,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:38:20,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:38:20,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:38:20,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:38:20,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:38:20,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:38:20,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:38:20,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:38:20,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:38:20,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:38:20,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:38:20,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:38:20,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:38:20,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:38:20,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:38:20,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:38:20,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:38:20,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:38:20,857 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:38:20,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:38:20,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:38:20,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:38:20,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:38:20,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:38:20,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:38:20,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:38:20,862 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:38:20,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:38:20,863 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:38:20,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:38:20,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:38:20,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:38:20,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:38:20,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:38:20,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:38:20,865 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:38:20,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:38:20,866 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:38:20,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:38:20,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:38:20,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:38:20,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:38:20,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:20,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:38:20,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:38:20,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:38:20,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:38:20,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:38:20,870 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:38:20,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:38:20,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:38:20,871 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_98030008-632c-446a-add3-6afd2dcd4e2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 [2022-11-18 18:38:21,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:38:21,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:38:21,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:38:21,242 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:38:21,242 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:38:21,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2022-11-18 18:38:21,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/data/fc6ace763/9c4b3dea396e4c6caba28d82b31863f4/FLAG12d9aab40 [2022-11-18 18:38:21,927 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:38:21,938 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2022-11-18 18:38:21,951 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/data/fc6ace763/9c4b3dea396e4c6caba28d82b31863f4/FLAG12d9aab40 [2022-11-18 18:38:22,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/data/fc6ace763/9c4b3dea396e4c6caba28d82b31863f4 [2022-11-18 18:38:22,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:38:22,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:38:22,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:22,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:38:22,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:38:22,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745c6734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22, skipping insertion in model container [2022-11-18 18:38:22,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:38:22,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:38:22,541 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_98030008-632c-446a-add3-6afd2dcd4e2f/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2022-11-18 18:38:22,547 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_98030008-632c-446a-add3-6afd2dcd4e2f/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2022-11-18 18:38:22,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:22,619 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:38:22,633 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_98030008-632c-446a-add3-6afd2dcd4e2f/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2022-11-18 18:38:22,635 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_98030008-632c-446a-add3-6afd2dcd4e2f/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2022-11-18 18:38:22,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:22,690 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:38:22,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22 WrapperNode [2022-11-18 18:38:22,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:22,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:22,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:38:22,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:38:22,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,749 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 210 [2022-11-18 18:38:22,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:22,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:38:22,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:38:22,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:38:22,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,786 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:38:22,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:38:22,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:38:22,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:38:22,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (1/1) ... [2022-11-18 18:38:22,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:22,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:22,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:38:22,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:38:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:38:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-18 18:38:22,908 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-18 18:38:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:38:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:38:22,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:38:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 18:38:22,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 18:38:23,033 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:38:23,035 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:38:23,629 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:38:23,638 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:38:23,638 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:38:23,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:23 BoogieIcfgContainer [2022-11-18 18:38:23,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:38:23,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:38:23,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:38:23,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:38:23,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:38:22" (1/3) ... [2022-11-18 18:38:23,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ed8e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:23, skipping insertion in model container [2022-11-18 18:38:23,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:22" (2/3) ... [2022-11-18 18:38:23,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ed8e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:23, skipping insertion in model container [2022-11-18 18:38:23,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:23" (3/3) ... [2022-11-18 18:38:23,659 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-3a.c.cil.c [2022-11-18 18:38:23,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:38:23,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:38:23,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:38:23,773 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;@1bb1efd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:38:23,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:38:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 85 states have (on average 1.6470588235294117) internal successors, (140), 89 states have internal predecessors, (140), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 18:38:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:38:23,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:23,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:23,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:23,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:23,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1847035396, now seen corresponding path program 1 times [2022-11-18 18:38:23,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:23,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891034344] [2022-11-18 18:38:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:23,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:24,017 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 18:38:24,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891034344] [2022-11-18 18:38:24,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891034344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:24,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:24,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255299056] [2022-11-18 18:38:24,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:24,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:38:24,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:24,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:38:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:38:24,081 INFO L87 Difference]: Start difference. First operand has 99 states, 85 states have (on average 1.6470588235294117) internal successors, (140), 89 states have internal predecessors, (140), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 18:38:24,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:24,173 INFO L93 Difference]: Finished difference Result 193 states and 317 transitions. [2022-11-18 18:38:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:38:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-18 18:38:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:24,202 INFO L225 Difference]: With dead ends: 193 [2022-11-18 18:38:24,202 INFO L226 Difference]: Without dead ends: 92 [2022-11-18 18:38:24,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:38:24,210 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:24,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-18 18:38:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-18 18:38:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 82 states have internal predecessors, (123), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 18:38:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 140 transitions. [2022-11-18 18:38:24,292 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 140 transitions. Word has length 7 [2022-11-18 18:38:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:24,293 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 140 transitions. [2022-11-18 18:38:24,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 18:38:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 140 transitions. [2022-11-18 18:38:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:38:24,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:24,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:24,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:38:24,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:24,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:24,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1846975814, now seen corresponding path program 1 times [2022-11-18 18:38:24,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:24,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839548389] [2022-11-18 18:38:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:24,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:38:24,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:38:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:38:24,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:38:24,404 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:38:24,407 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-18 18:38:24,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-18 18:38:24,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:38:24,415 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 18:38:24,420 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:38:24,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:38:24 BoogieIcfgContainer [2022-11-18 18:38:24,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:38:24,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:38:24,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:38:24,457 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:38:24,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:23" (3/4) ... [2022-11-18 18:38:24,462 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 18:38:24,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:38:24,465 INFO L158 Benchmark]: Toolchain (without parser) took 2237.38ms. Allocated memory is still 113.2MB. Free memory was 80.9MB in the beginning and 66.6MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 18:38:24,465 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 38.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:38:24,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.05ms. Allocated memory is still 113.2MB. Free memory was 80.6MB in the beginning and 85.3MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:38:24,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.97ms. Allocated memory is still 113.2MB. Free memory was 85.3MB in the beginning and 82.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 18:38:24,473 INFO L158 Benchmark]: Boogie Preprocessor took 36.58ms. Allocated memory is still 113.2MB. Free memory was 82.8MB in the beginning and 81.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:38:24,474 INFO L158 Benchmark]: RCFGBuilder took 848.83ms. Allocated memory is still 113.2MB. Free memory was 81.1MB in the beginning and 58.9MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-18 18:38:24,474 INFO L158 Benchmark]: TraceAbstraction took 812.69ms. Allocated memory is still 113.2MB. Free memory was 58.5MB in the beginning and 67.2MB in the end (delta: -8.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:38:24,475 INFO L158 Benchmark]: Witness Printer took 5.88ms. Allocated memory is still 113.2MB. Free memory was 67.2MB in the beginning and 66.6MB in the end (delta: 544.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:38:24,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 38.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.05ms. Allocated memory is still 113.2MB. Free memory was 80.6MB in the beginning and 85.3MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.97ms. Allocated memory is still 113.2MB. Free memory was 85.3MB in the beginning and 82.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.58ms. Allocated memory is still 113.2MB. Free memory was 82.8MB in the beginning and 81.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 848.83ms. Allocated memory is still 113.2MB. Free memory was 81.1MB in the beginning and 58.9MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 812.69ms. Allocated memory is still 113.2MB. Free memory was 58.5MB in the beginning and 67.2MB in the end (delta: -8.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.88ms. Allocated memory is still 113.2MB. Free memory was 67.2MB in the beginning and 66.6MB in the end (delta: 544.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L402] COND TRUE __VERIFIER_nondet_int() [L403] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.399f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 99 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 149 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-18 18:38:24,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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_98030008-632c-446a-add3-6afd2dcd4e2f/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 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 --- 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 18:38:27,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:38:27,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:38:27,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:38:27,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:38:27,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:38:27,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:38:27,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:38:27,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:38:27,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:38:27,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:38:27,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:38:27,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:38:27,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:38:27,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:38:27,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:38:27,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:38:27,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:38:27,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:38:27,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:38:27,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:38:27,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:38:27,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:38:27,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:38:27,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:38:27,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:38:27,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:38:27,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:38:27,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:38:27,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:38:27,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:38:27,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:38:27,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:38:27,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:38:27,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:38:27,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:38:27,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:38:27,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:38:27,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:38:27,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:38:27,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:38:27,311 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-18 18:38:27,352 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:38:27,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:38:27,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:38:27,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:38:27,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:38:27,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:38:27,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:38:27,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:38:27,355 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:38:27,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:38:27,356 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:38:27,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:38:27,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:38:27,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:38:27,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:38:27,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:38:27,357 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:38:27,358 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 18:38:27,358 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 18:38:27,358 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:38:27,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:38:27,359 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:38:27,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:38:27,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:38:27,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:38:27,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:38:27,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:27,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:38:27,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:38:27,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:38:27,361 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 18:38:27,361 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 18:38:27,361 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:38:27,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:38:27,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:38:27,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 18:38:27,362 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_98030008-632c-446a-add3-6afd2dcd4e2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 [2022-11-18 18:38:27,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:38:27,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:38:27,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:38:27,858 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:38:27,859 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:38:27,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2022-11-18 18:38:27,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/data/71d9f4411/ab75ab66942b4b7da846a7e55019f7a7/FLAG08d054d43 [2022-11-18 18:38:28,692 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:38:28,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2022-11-18 18:38:28,705 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/data/71d9f4411/ab75ab66942b4b7da846a7e55019f7a7/FLAG08d054d43 [2022-11-18 18:38:28,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/data/71d9f4411/ab75ab66942b4b7da846a7e55019f7a7 [2022-11-18 18:38:28,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:38:28,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:38:28,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:28,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:38:28,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:38:28,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:28" (1/1) ... [2022-11-18 18:38:28,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d371c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:28, skipping insertion in model container [2022-11-18 18:38:28,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:28" (1/1) ... [2022-11-18 18:38:28,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:38:29,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:38:29,252 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_98030008-632c-446a-add3-6afd2dcd4e2f/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2022-11-18 18:38:29,260 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_98030008-632c-446a-add3-6afd2dcd4e2f/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2022-11-18 18:38:29,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:29,475 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:38:29,515 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_98030008-632c-446a-add3-6afd2dcd4e2f/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2022-11-18 18:38:29,519 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_98030008-632c-446a-add3-6afd2dcd4e2f/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2022-11-18 18:38:29,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:29,605 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:38:29,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29 WrapperNode [2022-11-18 18:38:29,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:29,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:29,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:38:29,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:38:29,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,702 INFO L138 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2022-11-18 18:38:29,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:29,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:38:29,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:38:29,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:38:29,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:38:29,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:38:29,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:38:29,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:38:29,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:29,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:29,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:38:29,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:38:29,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:38:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 18:38:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-18 18:38:29,897 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-18 18:38:29,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:38:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:38:29,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 18:38:29,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 18:38:30,060 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:38:30,063 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:38:32,873 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:38:32,883 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:38:32,884 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:38:32,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:32 BoogieIcfgContainer [2022-11-18 18:38:32,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:38:32,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:38:32,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:38:32,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:38:32,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:38:28" (1/3) ... [2022-11-18 18:38:32,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772afe13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:32, skipping insertion in model container [2022-11-18 18:38:32,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (2/3) ... [2022-11-18 18:38:32,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772afe13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:32, skipping insertion in model container [2022-11-18 18:38:32,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:32" (3/3) ... [2022-11-18 18:38:32,900 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-3a.c.cil.c [2022-11-18 18:38:32,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:38:32,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:38:32,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:38:33,005 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;@590e20af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:38:33,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:38:33,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 18:38:33,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:38:33,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:33,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:33,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:33,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:33,030 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-18 18:38:33,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:33,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032022001] [2022-11-18 18:38:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:33,048 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 18:38:33,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:33,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:38:33,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:38:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:33,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 18:38:33,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:33,725 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 18:38:33,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:38:33,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:38:33,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032022001] [2022-11-18 18:38:33,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032022001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:33,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:33,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:33,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46211550] [2022-11-18 18:38:33,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:33,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:38:33,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:38:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:38:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:38:33,791 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 18:38:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:33,845 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2022-11-18 18:38:33,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:38:33,859 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-18 18:38:33,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:33,871 INFO L225 Difference]: With dead ends: 157 [2022-11-18 18:38:33,871 INFO L226 Difference]: Without dead ends: 74 [2022-11-18 18:38:33,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:38:33,880 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:33,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-18 18:38:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-18 18:38:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 18:38:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2022-11-18 18:38:33,940 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2022-11-18 18:38:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:33,941 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-11-18 18:38:33,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 18:38:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2022-11-18 18:38:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:38:33,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:33,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:33,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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)] Ended with exit code 0 [2022-11-18 18:38:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:38:34,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:34,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:34,168 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-18 18:38:34,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:34,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30144638] [2022-11-18 18:38:34,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:34,169 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 18:38:34,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:34,171 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:38:34,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:52:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:09,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:52:09,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:52:25,137 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-18 18:52:59,095 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-11-18 18:53:01,163 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-11-18 18:53:01,164 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 18:53:01,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:01,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:01,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30144638] [2022-11-18 18:53:01,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30144638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:01,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:01,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:53:01,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241390276] [2022-11-18 18:53:01,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:01,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:53:01,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:01,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:53:01,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-11-18 18:53:01,169 INFO L87 Difference]: Start difference. First operand 74 states and 108 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 18:53:03,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 18:53:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:04,218 INFO L93 Difference]: Finished difference Result 74 states and 108 transitions. [2022-11-18 18:53:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:53:04,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 7 [2022-11-18 18:53:04,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:04,221 INFO L225 Difference]: With dead ends: 74 [2022-11-18 18:53:04,222 INFO L226 Difference]: Without dead ends: 69 [2022-11-18 18:53:04,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=18, Invalid=17, Unknown=3, NotChecked=18, Total=56 [2022-11-18 18:53:04,223 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 104 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:04,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 273 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 1 Unknown, 211 Unchecked, 2.7s Time] [2022-11-18 18:53:04,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-18 18:53:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-18 18:53:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 59 states have internal predecessors, (86), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 18:53:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 103 transitions. [2022-11-18 18:53:04,233 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 103 transitions. Word has length 7 [2022-11-18 18:53:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:04,234 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 103 transitions. [2022-11-18 18:53:04,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 18:53:04,235 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 103 transitions. [2022-11-18 18:53:04,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 18:53:04,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:04,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:04,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:04,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:04,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:04,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:04,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1413922597, now seen corresponding path program 1 times [2022-11-18 18:53:04,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:04,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240976286] [2022-11-18 18:53:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:04,444 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 18:53:04,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:04,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:04,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:04,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:53:04,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:04,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:53:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:05,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:05,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240976286] [2022-11-18 18:53:05,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240976286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:53:05,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:53:05,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-18 18:53:05,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817993693] [2022-11-18 18:53:05,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:53:05,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:53:05,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:05,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:53:05,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:53:05,267 INFO L87 Difference]: Start difference. First operand 69 states and 103 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:53:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:05,806 INFO L93 Difference]: Finished difference Result 162 states and 253 transitions. [2022-11-18 18:53:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:53:05,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-18 18:53:05,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:05,811 INFO L225 Difference]: With dead ends: 162 [2022-11-18 18:53:05,811 INFO L226 Difference]: Without dead ends: 118 [2022-11-18 18:53:05,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:53:05,814 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 57 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:05,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 707 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:53:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-18 18:53:05,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 81. [2022-11-18 18:53:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 68 states have internal predecessors, (96), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (15), 11 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-18 18:53:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 122 transitions. [2022-11-18 18:53:05,835 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 122 transitions. Word has length 33 [2022-11-18 18:53:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:05,836 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 122 transitions. [2022-11-18 18:53:05,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:53:05,836 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 122 transitions. [2022-11-18 18:53:05,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 18:53:05,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:05,839 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:05,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:06,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:06,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:06,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1578065669, now seen corresponding path program 1 times [2022-11-18 18:53:06,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:06,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333343720] [2022-11-18 18:53:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:06,067 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 18:53:06,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:06,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:06,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:06,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:53:06,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:06,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:53:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:06,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:06,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333343720] [2022-11-18 18:53:06,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333343720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:53:06,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:53:06,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-18 18:53:06,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877938155] [2022-11-18 18:53:06,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:53:06,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:53:06,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:06,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:53:06,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:53:06,893 INFO L87 Difference]: Start difference. First operand 81 states and 122 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:53:07,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:07,603 INFO L93 Difference]: Finished difference Result 179 states and 276 transitions. [2022-11-18 18:53:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:53:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2022-11-18 18:53:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:07,609 INFO L225 Difference]: With dead ends: 179 [2022-11-18 18:53:07,609 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 18:53:07,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:53:07,616 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 55 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:07,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 465 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:53:07,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 18:53:07,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2022-11-18 18:53:07,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 102 states have (on average 1.4313725490196079) internal successors, (146), 103 states have internal predecessors, (146), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (24), 20 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-18 18:53:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 188 transitions. [2022-11-18 18:53:07,658 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 188 transitions. Word has length 37 [2022-11-18 18:53:07,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:07,659 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 188 transitions. [2022-11-18 18:53:07,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:53:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 188 transitions. [2022-11-18 18:53:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 18:53:07,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:07,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:07,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:07,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:07,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:07,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:07,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1319900231, now seen corresponding path program 1 times [2022-11-18 18:53:07,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:07,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847802402] [2022-11-18 18:53:07,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:07,867 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 18:53:07,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:07,882 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:07,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:07,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:53:07,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:08,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:08,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:08,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847802402] [2022-11-18 18:53:08,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847802402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:08,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:08,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:53:08,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970572678] [2022-11-18 18:53:08,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:08,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:53:08,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:08,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:53:08,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:53:08,319 INFO L87 Difference]: Start difference. First operand 124 states and 188 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:08,924 INFO L93 Difference]: Finished difference Result 280 states and 429 transitions. [2022-11-18 18:53:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:53:08,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-11-18 18:53:08,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:08,932 INFO L225 Difference]: With dead ends: 280 [2022-11-18 18:53:08,934 INFO L226 Difference]: Without dead ends: 210 [2022-11-18 18:53:08,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:53:08,939 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 52 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:08,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 462 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:53:08,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-18 18:53:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 206. [2022-11-18 18:53:08,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 174 states have (on average 1.4252873563218391) internal successors, (248), 173 states have internal predecessors, (248), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 34 states have call predecessors, (34), 27 states have call successors, (34) [2022-11-18 18:53:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 310 transitions. [2022-11-18 18:53:09,002 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 310 transitions. Word has length 37 [2022-11-18 18:53:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:09,003 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 310 transitions. [2022-11-18 18:53:09,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 310 transitions. [2022-11-18 18:53:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 18:53:09,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:09,005 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:09,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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)] Ended with exit code 0 [2022-11-18 18:53:09,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:09,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:09,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:09,225 INFO L85 PathProgramCache]: Analyzing trace with hash -639841861, now seen corresponding path program 1 times [2022-11-18 18:53:09,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:09,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749841038] [2022-11-18 18:53:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:09,226 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 18:53:09,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:09,228 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:09,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:09,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:53:09,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:09,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:09,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:09,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749841038] [2022-11-18 18:53:09,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749841038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:09,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:09,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:53:09,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175758145] [2022-11-18 18:53:09,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:09,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:53:09,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:09,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:53:09,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:53:09,806 INFO L87 Difference]: Start difference. First operand 206 states and 310 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:10,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:10,656 INFO L93 Difference]: Finished difference Result 294 states and 444 transitions. [2022-11-18 18:53:10,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:53:10,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-11-18 18:53:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:10,659 INFO L225 Difference]: With dead ends: 294 [2022-11-18 18:53:10,659 INFO L226 Difference]: Without dead ends: 230 [2022-11-18 18:53:10,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:53:10,661 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 105 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:10,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 545 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 18:53:10,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-18 18:53:10,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 188. [2022-11-18 18:53:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 162 states have (on average 1.3950617283950617) internal successors, (226), 161 states have internal predecessors, (226), 22 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (28), 28 states have call predecessors, (28), 21 states have call successors, (28) [2022-11-18 18:53:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 276 transitions. [2022-11-18 18:53:10,694 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 276 transitions. Word has length 37 [2022-11-18 18:53:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:10,695 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 276 transitions. [2022-11-18 18:53:10,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 276 transitions. [2022-11-18 18:53:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 18:53:10,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:10,697 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:10,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:10,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:10,911 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:10,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:10,911 INFO L85 PathProgramCache]: Analyzing trace with hash 321822244, now seen corresponding path program 1 times [2022-11-18 18:53:10,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:10,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437397126] [2022-11-18 18:53:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:10,912 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 18:53:10,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:10,915 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:10,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:10,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:53:10,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:11,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:53:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:12,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:12,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437397126] [2022-11-18 18:53:12,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437397126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:53:12,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:53:12,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-18 18:53:12,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728232101] [2022-11-18 18:53:12,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:53:12,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:53:12,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:12,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:53:12,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:53:12,045 INFO L87 Difference]: Start difference. First operand 188 states and 276 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:53:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:13,313 INFO L93 Difference]: Finished difference Result 276 states and 412 transitions. [2022-11-18 18:53:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:53:13,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2022-11-18 18:53:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:13,321 INFO L225 Difference]: With dead ends: 276 [2022-11-18 18:53:13,322 INFO L226 Difference]: Without dead ends: 238 [2022-11-18 18:53:13,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:53:13,325 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 196 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:13,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 652 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:53:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-18 18:53:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 179. [2022-11-18 18:53:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 156 states have (on average 1.3846153846153846) internal successors, (216), 155 states have internal predecessors, (216), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (25), 25 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-18 18:53:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 260 transitions. [2022-11-18 18:53:13,351 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 260 transitions. Word has length 41 [2022-11-18 18:53:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:13,353 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 260 transitions. [2022-11-18 18:53:13,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:53:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 260 transitions. [2022-11-18 18:53:13,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 18:53:13,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:13,358 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:13,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:13,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:13,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:13,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash 64679693, now seen corresponding path program 1 times [2022-11-18 18:53:13,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:13,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367518265] [2022-11-18 18:53:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:13,572 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 18:53:13,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:13,573 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:13,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (9)] Waiting until timeout for monitored process [2022-11-18 18:53:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:13,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:53:13,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 18:53:13,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:13,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:13,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367518265] [2022-11-18 18:53:13,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367518265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:13,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:13,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:53:13,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321249184] [2022-11-18 18:53:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:13,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:53:13,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:53:13,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:53:13,895 INFO L87 Difference]: Start difference. First operand 179 states and 260 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:14,118 INFO L93 Difference]: Finished difference Result 332 states and 490 transitions. [2022-11-18 18:53:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:53:14,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-18 18:53:14,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:14,123 INFO L225 Difference]: With dead ends: 332 [2022-11-18 18:53:14,123 INFO L226 Difference]: Without dead ends: 266 [2022-11-18 18:53:14,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:53:14,126 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 66 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:14,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 336 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:53:14,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-18 18:53:14,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 234. [2022-11-18 18:53:14,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 208 states have (on average 1.3461538461538463) internal successors, (280), 207 states have internal predecessors, (280), 22 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (28), 28 states have call predecessors, (28), 21 states have call successors, (28) [2022-11-18 18:53:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 330 transitions. [2022-11-18 18:53:14,164 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 330 transitions. Word has length 44 [2022-11-18 18:53:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:14,165 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 330 transitions. [2022-11-18 18:53:14,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 330 transitions. [2022-11-18 18:53:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 18:53:14,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:14,169 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:14,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (9)] Ended with exit code 0 [2022-11-18 18:53:14,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:14,385 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:14,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1143994910, now seen corresponding path program 1 times [2022-11-18 18:53:14,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:14,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005019027] [2022-11-18 18:53:14,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:14,386 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 18:53:14,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:14,387 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:14,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (10)] Waiting until timeout for monitored process [2022-11-18 18:53:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:14,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:53:14,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:53:14,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:14,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:14,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005019027] [2022-11-18 18:53:14,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005019027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:14,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:14,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:53:14,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546318165] [2022-11-18 18:53:14,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:14,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:53:14,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:14,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:53:14,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:53:14,661 INFO L87 Difference]: Start difference. First operand 234 states and 330 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:53:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:15,012 INFO L93 Difference]: Finished difference Result 409 states and 574 transitions. [2022-11-18 18:53:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:53:15,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-11-18 18:53:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:15,015 INFO L225 Difference]: With dead ends: 409 [2022-11-18 18:53:15,015 INFO L226 Difference]: Without dead ends: 179 [2022-11-18 18:53:15,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:53:15,016 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 27 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:15,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 253 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:53:15,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-18 18:53:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 167. [2022-11-18 18:53:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 147 states have (on average 1.3061224489795917) internal successors, (192), 149 states have internal predecessors, (192), 15 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (20), 17 states have call predecessors, (20), 14 states have call successors, (20) [2022-11-18 18:53:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 227 transitions. [2022-11-18 18:53:15,043 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 227 transitions. Word has length 44 [2022-11-18 18:53:15,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:15,043 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 227 transitions. [2022-11-18 18:53:15,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:53:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 227 transitions. [2022-11-18 18:53:15,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 18:53:15,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:15,046 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:15,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:15,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:15,258 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash -610339590, now seen corresponding path program 1 times [2022-11-18 18:53:15,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:15,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470624908] [2022-11-18 18:53:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:15,259 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 18:53:15,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:15,260 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:15,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (11)] Waiting until timeout for monitored process [2022-11-18 18:53:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:15,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:53:15,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:16,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:53:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 18:53:17,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:17,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470624908] [2022-11-18 18:53:17,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470624908] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:53:17,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:53:17,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-18 18:53:17,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597104305] [2022-11-18 18:53:17,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:17,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:53:17,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:17,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:53:17,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:53:17,285 INFO L87 Difference]: Start difference. First operand 167 states and 227 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:19,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:19,744 INFO L93 Difference]: Finished difference Result 317 states and 460 transitions. [2022-11-18 18:53:19,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:53:19,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-18 18:53:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:19,748 INFO L225 Difference]: With dead ends: 317 [2022-11-18 18:53:19,748 INFO L226 Difference]: Without dead ends: 281 [2022-11-18 18:53:19,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:53:19,749 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 188 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:19,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 501 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 18:53:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-18 18:53:19,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 205. [2022-11-18 18:53:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 179 states have (on average 1.3016759776536313) internal successors, (233), 182 states have internal predecessors, (233), 21 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (26), 23 states have call predecessors, (26), 20 states have call successors, (26) [2022-11-18 18:53:19,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 280 transitions. [2022-11-18 18:53:19,770 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 280 transitions. Word has length 45 [2022-11-18 18:53:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:19,770 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 280 transitions. [2022-11-18 18:53:19,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 280 transitions. [2022-11-18 18:53:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 18:53:19,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:19,772 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:19,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:19,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:19,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:19,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:19,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1164667772, now seen corresponding path program 1 times [2022-11-18 18:53:19,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:19,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190401284] [2022-11-18 18:53:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:19,986 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 18:53:19,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:19,988 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:19,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (12)] Waiting until timeout for monitored process [2022-11-18 18:53:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:20,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:53:20,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 18:53:20,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:20,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:20,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190401284] [2022-11-18 18:53:20,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190401284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:20,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:20,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:53:20,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968721457] [2022-11-18 18:53:20,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:20,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:53:20,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:53:20,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:53:20,239 INFO L87 Difference]: Start difference. First operand 205 states and 280 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:20,468 INFO L93 Difference]: Finished difference Result 212 states and 286 transitions. [2022-11-18 18:53:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:53:20,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-18 18:53:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:20,471 INFO L225 Difference]: With dead ends: 212 [2022-11-18 18:53:20,471 INFO L226 Difference]: Without dead ends: 205 [2022-11-18 18:53:20,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:53:20,472 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 5 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:20,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 384 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:53:20,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-18 18:53:20,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-11-18 18:53:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 179 states have (on average 1.2849162011173185) internal successors, (230), 182 states have internal predecessors, (230), 21 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (26), 23 states have call predecessors, (26), 20 states have call successors, (26) [2022-11-18 18:53:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2022-11-18 18:53:20,494 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 45 [2022-11-18 18:53:20,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:20,495 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2022-11-18 18:53:20,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2022-11-18 18:53:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 18:53:20,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:20,497 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:20,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:20,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:20,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash -617643621, now seen corresponding path program 1 times [2022-11-18 18:53:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:20,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474276135] [2022-11-18 18:53:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:20,714 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 18:53:20,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:20,716 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:20,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (13)] Waiting until timeout for monitored process [2022-11-18 18:53:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:20,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:53:20,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 18:53:21,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:21,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:21,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474276135] [2022-11-18 18:53:21,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474276135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:21,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:21,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:53:21,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521256185] [2022-11-18 18:53:21,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:21,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:53:21,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:21,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:53:21,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:53:21,248 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:21,645 INFO L93 Difference]: Finished difference Result 248 states and 338 transitions. [2022-11-18 18:53:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:53:21,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-18 18:53:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:21,647 INFO L225 Difference]: With dead ends: 248 [2022-11-18 18:53:21,647 INFO L226 Difference]: Without dead ends: 246 [2022-11-18 18:53:21,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:53:21,648 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 38 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:21,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 600 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-11-18 18:53:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-18 18:53:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 209. [2022-11-18 18:53:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 182 states have (on average 1.2802197802197801) internal successors, (233), 185 states have internal predecessors, (233), 21 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (26), 23 states have call predecessors, (26), 20 states have call successors, (26) [2022-11-18 18:53:21,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2022-11-18 18:53:21,668 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 45 [2022-11-18 18:53:21,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:21,668 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2022-11-18 18:53:21,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2022-11-18 18:53:21,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 18:53:21,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:21,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:21,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:21,882 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:21,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash -560385319, now seen corresponding path program 1 times [2022-11-18 18:53:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:21,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393531291] [2022-11-18 18:53:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:21,883 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 18:53:21,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:21,884 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:21,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (14)] Waiting until timeout for monitored process [2022-11-18 18:53:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:21,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:53:21,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 18:53:22,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:22,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:22,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393531291] [2022-11-18 18:53:22,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393531291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:22,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:22,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:53:22,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130824053] [2022-11-18 18:53:22,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:22,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:53:22,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:22,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:53:22,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:53:22,350 INFO L87 Difference]: Start difference. First operand 209 states and 280 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:22,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:22,800 INFO L93 Difference]: Finished difference Result 262 states and 354 transitions. [2022-11-18 18:53:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:53:22,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-18 18:53:22,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:22,803 INFO L225 Difference]: With dead ends: 262 [2022-11-18 18:53:22,803 INFO L226 Difference]: Without dead ends: 260 [2022-11-18 18:53:22,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:53:22,804 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:22,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 469 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-11-18 18:53:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-18 18:53:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 213. [2022-11-18 18:53:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 185 states have (on average 1.2756756756756757) internal successors, (236), 188 states have internal predecessors, (236), 21 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (26), 23 states have call predecessors, (26), 20 states have call successors, (26) [2022-11-18 18:53:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 283 transitions. [2022-11-18 18:53:22,833 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 283 transitions. Word has length 45 [2022-11-18 18:53:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:22,834 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 283 transitions. [2022-11-18 18:53:22,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:22,834 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 283 transitions. [2022-11-18 18:53:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 18:53:22,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:22,835 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:22,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:23,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:23,049 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1322710928, now seen corresponding path program 1 times [2022-11-18 18:53:23,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:23,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137840315] [2022-11-18 18:53:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:23,050 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 18:53:23,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:23,053 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:23,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (15)] Waiting until timeout for monitored process [2022-11-18 18:53:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:23,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:53:23,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 18:53:23,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:23,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:23,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137840315] [2022-11-18 18:53:23,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137840315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:23,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:23,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:53:23,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693418900] [2022-11-18 18:53:23,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:23,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:53:23,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:23,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:53:23,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:53:23,339 INFO L87 Difference]: Start difference. First operand 213 states and 283 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:23,516 INFO L93 Difference]: Finished difference Result 352 states and 482 transitions. [2022-11-18 18:53:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:53:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-11-18 18:53:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:23,520 INFO L225 Difference]: With dead ends: 352 [2022-11-18 18:53:23,520 INFO L226 Difference]: Without dead ends: 300 [2022-11-18 18:53:23,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:53:23,521 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 75 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:23,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 321 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:53:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-18 18:53:23,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 232. [2022-11-18 18:53:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 201 states have (on average 1.2835820895522387) internal successors, (258), 203 states have internal predecessors, (258), 24 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) [2022-11-18 18:53:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 311 transitions. [2022-11-18 18:53:23,548 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 311 transitions. Word has length 46 [2022-11-18 18:53:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:23,548 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 311 transitions. [2022-11-18 18:53:23,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:23,549 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 311 transitions. [2022-11-18 18:53:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 18:53:23,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:23,554 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:23,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:23,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:23,766 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:23,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:23,766 INFO L85 PathProgramCache]: Analyzing trace with hash -514674649, now seen corresponding path program 1 times [2022-11-18 18:53:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:23,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963708242] [2022-11-18 18:53:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:23,767 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 18:53:23,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:23,768 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:23,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (16)] Waiting until timeout for monitored process [2022-11-18 18:53:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:23,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:53:23,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 18:53:23,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:23,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:23,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963708242] [2022-11-18 18:53:23,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963708242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:23,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:23,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:53:23,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663707263] [2022-11-18 18:53:23,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:23,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:53:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:53:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:53:23,938 INFO L87 Difference]: Start difference. First operand 232 states and 311 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:24,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:24,080 INFO L93 Difference]: Finished difference Result 247 states and 327 transitions. [2022-11-18 18:53:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:53:24,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-11-18 18:53:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:24,083 INFO L225 Difference]: With dead ends: 247 [2022-11-18 18:53:24,083 INFO L226 Difference]: Without dead ends: 208 [2022-11-18 18:53:24,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:53:24,085 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 1 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:24,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 288 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:53:24,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-18 18:53:24,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-11-18 18:53:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 177 states have (on average 1.2994350282485876) internal successors, (230), 180 states have internal predecessors, (230), 24 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-11-18 18:53:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 281 transitions. [2022-11-18 18:53:24,112 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 281 transitions. Word has length 49 [2022-11-18 18:53:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:24,112 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 281 transitions. [2022-11-18 18:53:24,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 281 transitions. [2022-11-18 18:53:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 18:53:24,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:24,114 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:24,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:24,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:24,330 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:24,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash -627639643, now seen corresponding path program 1 times [2022-11-18 18:53:24,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:24,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936562820] [2022-11-18 18:53:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:24,331 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 18:53:24,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:24,332 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:24,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (17)] Waiting until timeout for monitored process [2022-11-18 18:53:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:24,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:53:24,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:53:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 18:53:24,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:53:24,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:53:24,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936562820] [2022-11-18 18:53:24,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936562820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:24,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:24,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:53:24,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121600453] [2022-11-18 18:53:24,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:24,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:53:24,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:53:24,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:53:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:53:24,629 INFO L87 Difference]: Start difference. First operand 208 states and 281 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:25,353 INFO L93 Difference]: Finished difference Result 335 states and 452 transitions. [2022-11-18 18:53:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:53:25,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-18 18:53:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:25,356 INFO L225 Difference]: With dead ends: 335 [2022-11-18 18:53:25,356 INFO L226 Difference]: Without dead ends: 293 [2022-11-18 18:53:25,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:53:25,357 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 201 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:25,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 421 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:53:25,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-18 18:53:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 208. [2022-11-18 18:53:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 177 states have (on average 1.2881355932203389) internal successors, (228), 180 states have internal predecessors, (228), 24 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-11-18 18:53:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 279 transitions. [2022-11-18 18:53:25,389 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 279 transitions. Word has length 50 [2022-11-18 18:53:25,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:25,389 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 279 transitions. [2022-11-18 18:53:25,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 18:53:25,390 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 279 transitions. [2022-11-18 18:53:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 18:53:25,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:25,391 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:25,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:25,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:25,603 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:25,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:25,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1892770879, now seen corresponding path program 1 times [2022-11-18 18:53:25,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:53:25,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721447421] [2022-11-18 18:53:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:25,604 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 18:53:25,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:53:25,605 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:25,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (18)] Waiting until timeout for monitored process [2022-11-18 18:53:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:53:25,661 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:53:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:53:25,732 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-18 18:53:25,733 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:53:25,733 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-18 18:53:25,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-18 18:53:25,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:25,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/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 18:53:25,940 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:53:25,945 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:53:26,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:53:26 BoogieIcfgContainer [2022-11-18 18:53:26,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:53:26,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:53:26,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:53:26,011 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:53:26,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:32" (3/4) ... [2022-11-18 18:53:26,014 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 18:53:26,124 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:53:26,124 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:53:26,125 INFO L158 Benchmark]: Toolchain (without parser) took 897146.75ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 33.4MB in the beginning and 29.3MB in the end (delta: 4.2MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2022-11-18 18:53:26,125 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.0MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:53:26,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 626.51ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 33.2MB in the beginning and 51.1MB in the end (delta: -17.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 18:53:26,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.98ms. Allocated memory is still 71.3MB. Free memory was 51.1MB in the beginning and 48.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:53:26,128 INFO L158 Benchmark]: Boogie Preprocessor took 82.82ms. Allocated memory is still 71.3MB. Free memory was 48.9MB in the beginning and 47.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:53:26,128 INFO L158 Benchmark]: RCFGBuilder took 3097.39ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 47.3MB in the end (delta: -351.8kB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 18:53:26,129 INFO L158 Benchmark]: TraceAbstraction took 893114.67ms. Allocated memory is still 71.3MB. Free memory was 46.7MB in the beginning and 33.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2022-11-18 18:53:26,129 INFO L158 Benchmark]: Witness Printer took 114.10ms. Allocated memory is still 71.3MB. Free memory was 33.5MB in the beginning and 29.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 18:53:26,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.0MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 626.51ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 33.2MB in the beginning and 51.1MB in the end (delta: -17.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.98ms. Allocated memory is still 71.3MB. Free memory was 51.1MB in the beginning and 48.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.82ms. Allocated memory is still 71.3MB. Free memory was 48.9MB in the beginning and 47.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3097.39ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 47.3MB in the end (delta: -351.8kB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 893114.67ms. Allocated memory is still 71.3MB. Free memory was 46.7MB in the beginning and 33.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Witness Printer took 114.10ms. Allocated memory is still 71.3MB. Free memory was 33.5MB in the beginning and 29.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 60]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L402] COND FALSE !(__VERIFIER_nondet_int()) [L405] CALL main2() [L269] unsigned int a ; [L270] unsigned int ma = __VERIFIER_nondet_uint(); [L271] signed char ea = __VERIFIER_nondet_char(); [L272] unsigned int b ; [L273] unsigned int mb = __VERIFIER_nondet_uint(); [L274] signed char eb = __VERIFIER_nondet_char(); [L275] unsigned int r_add ; [L276] unsigned int zero ; [L277] int sa ; [L278] int sb ; [L279] int tmp ; [L280] int tmp___0 ; [L281] int tmp___1 ; [L282] int tmp___2 ; [L283] int tmp___3 ; [L284] int tmp___4 ; [L285] int tmp___5 ; [L286] int tmp___6 ; [L287] int tmp___7 ; [L288] int tmp___8 ; [L289] int tmp___9 ; [L290] int __retres23 ; [L294] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L72] COND TRUE ! m [L73] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L294] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0] [L294] zero = base2flt(0, 0) [L295] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L100] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=2147483648, e=0, m=0, res=2147483648] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-2147483648, __retres4=2147483648, e=0, m=0, res=2147483648] [L295] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=-2147483648, ea=0, ma=16777216, zero=0] [L295] a = base2flt(ma, ea) [L296] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=64, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L100] COND TRUE 1 VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=64, \old(m)=16777216, __retres4=3221225472, e=64, m=0, res=3221225472] [L123] return (__retres4); VAL [\old(e)=64, \old(m)=16777216, \result=-1073741824, __retres4=3221225472, e=64, m=0, res=3221225472] [L296] RET, EXPR base2flt(mb, eb) VAL [a=2147483648, base2flt(mb, eb)=-1073741824, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L296] b = base2flt(mb, eb) [L298] COND FALSE !(a < zero) VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L301] COND TRUE a > zero [L302] tmp = 1 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, tmp=1, zero=0] [L306] sa = tmp VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L308] COND FALSE !(b < zero) VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L311] COND TRUE b > zero [L312] tmp___0 = 1 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, tmp___0=1, zero=0] [L316] sb = tmp___0 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, sb=1, tmp=1, tmp___0=1, zero=0] [L319] CALL addflt(a, b) [L127] unsigned int res ; [L128] unsigned int ma ; [L129] unsigned int mb ; [L130] unsigned int delta ; [L131] int ea ; [L132] int eb ; [L133] unsigned int tmp ; [L134] unsigned int __retres10 ; VAL [\old(a)=2147483648, \old(b)=3221225472, a=2147483648, b=3221225472] [L137] COND TRUE a < b [L138] tmp = a [L139] a = b [L140] b = tmp VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, tmp=2147483648] [L144] COND FALSE !(! b) [L151] ma = a & ((1U << 24U) - 1U) [L152] ea = (int )(a >> 24U) - 128 [L153] ma = ma | (1U << 24U) [L154] mb = b & ((1U << 24U) - 1U) [L155] eb = (int )(b >> 24U) - 128 [L156] mb = mb | (1U << 24U) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L157] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L59] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L157] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L158] delta = ea - eb VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, delta=64, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L159] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L59] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L60] reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 893.0s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1241 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1208 mSDsluCounter, 6794 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 237 IncrementalHoareTripleChecker+Unchecked, 5035 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 835 IncrementalHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 1759 mSDtfsCounter, 835 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 775 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=8, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 507 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 816.2s SatisfiabilityAnalysisTime, 59.1s InterpolantComputationTime, 663 NumberOfCodeBlocks, 663 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 748 ConstructedInterpolants, 4 QuantifiedInterpolants, 1404 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1194 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 20 InterpolantComputations, 13 PerfectInterpolantSequences, 255/282 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-18 18:53:26,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98030008-632c-446a-add3-6afd2dcd4e2f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE