./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array23_pattern.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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array23_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- 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 20:01:49,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:01:49,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:01:49,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:01:49,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:01:49,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:01:49,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:01:49,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:01:49,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:01:49,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:01:49,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:01:49,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:01:49,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:01:49,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:01:49,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:01:49,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:01:49,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:01:49,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:01:49,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:01:49,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:01:49,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:01:49,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:01:49,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:01:49,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:01:49,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:01:49,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:01:49,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:01:49,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:01:49,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:01:49,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:01:49,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:01:49,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:01:49,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:01:49,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:01:49,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:01:49,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:01:49,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:01:49,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:01:49,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:01:49,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:01:49,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:01:49,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:01:49,907 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:01:49,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:01:49,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:01:49,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:01:49,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:01:49,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:01:49,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:01:49,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:01:49,910 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:01:49,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:01:49,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:01:49,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:01:49,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:01:49,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:01:49,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:01:49,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:01:49,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:01:49,913 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:01:49,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:01:49,913 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:01:49,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:01:49,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:01:49,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:01:49,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:01:49,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:01:49,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:01:49,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:01:49,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:01:49,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:01:49,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:01:49,916 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:01:49,916 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:01:49,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:01:49,917 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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2022-11-18 20:01:50,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:01:50,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:01:50,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:01:50,219 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:01:50,220 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:01:50,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-patterns/array23_pattern.c [2022-11-18 20:01:50,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/data/1c1174b42/12ebff6636784d3688bcc6552b799656/FLAG456076a7b [2022-11-18 20:01:50,900 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:01:50,901 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/sv-benchmarks/c/array-patterns/array23_pattern.c [2022-11-18 20:01:50,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/data/1c1174b42/12ebff6636784d3688bcc6552b799656/FLAG456076a7b [2022-11-18 20:01:51,263 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/data/1c1174b42/12ebff6636784d3688bcc6552b799656 [2022-11-18 20:01:51,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:01:51,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:01:51,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:01:51,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:01:51,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:01:51,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a56fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51, skipping insertion in model container [2022-11-18 20:01:51,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:01:51,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:01:51,549 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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2022-11-18 20:01:51,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:01:51,612 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:01:51,633 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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2022-11-18 20:01:51,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:01:51,671 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:01:51,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51 WrapperNode [2022-11-18 20:01:51,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:01:51,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:01:51,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:01:51,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:01:51,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,733 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2022-11-18 20:01:51,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:01:51,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:01:51,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:01:51,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:01:51,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:01:51,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:01:51,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:01:51,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:01:51,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (1/1) ... [2022-11-18 20:01:51,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:01:51,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:51,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:01:51,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:01:51,880 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2022-11-18 20:01:51,881 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2022-11-18 20:01:51,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:01:51,881 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:01:51,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:01:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:01:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:01:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:01:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:01:51,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:01:51,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:01:51,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:01:51,995 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:01:51,997 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:01:52,339 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:01:52,346 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:01:52,355 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 20:01:52,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:01:52 BoogieIcfgContainer [2022-11-18 20:01:52,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:01:52,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:01:52,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:01:52,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:01:52,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:01:51" (1/3) ... [2022-11-18 20:01:52,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f6b45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:01:52, skipping insertion in model container [2022-11-18 20:01:52,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:01:51" (2/3) ... [2022-11-18 20:01:52,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f6b45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:01:52, skipping insertion in model container [2022-11-18 20:01:52,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:01:52" (3/3) ... [2022-11-18 20:01:52,371 INFO L112 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2022-11-18 20:01:52,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:01:52,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:01:52,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:01:52,481 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;@1c37dff3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:01:52,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:01:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:01:52,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:01:52,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:52,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:52,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1798908762, now seen corresponding path program 1 times [2022-11-18 20:01:52,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:52,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75224922] [2022-11-18 20:01:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:52,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:52,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:52,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75224922] [2022-11-18 20:01:52,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:01:52,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135108585] [2022-11-18 20:01:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:52,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:52,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:52,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:52,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:01:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:52,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:01:52,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:52,852 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 20:01:52,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:52,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135108585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:52,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:52,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:01:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374681023] [2022-11-18 20:01:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:52,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:01:52,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:52,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:01:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:01:52,904 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:01:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:52,942 INFO L93 Difference]: Finished difference Result 79 states and 117 transitions. [2022-11-18 20:01:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:01:52,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-18 20:01:52,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:52,954 INFO L225 Difference]: With dead ends: 79 [2022-11-18 20:01:52,954 INFO L226 Difference]: Without dead ends: 37 [2022-11-18 20:01:52,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 20:01:52,962 INFO L413 NwaCegarLoop]: 51 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, 51 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 20:01:52,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:01:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-18 20:01:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-18 20:01:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:01:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2022-11-18 20:01:53,015 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 15 [2022-11-18 20:01:53,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:53,016 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2022-11-18 20:01:53,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:01:53,017 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2022-11-18 20:01:53,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:01:53,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:53,022 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 20:01:53,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:01:53,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 20:01:53,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:53,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1909329698, now seen corresponding path program 1 times [2022-11-18 20:01:53,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:53,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849439937] [2022-11-18 20:01:53,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:53,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:53,258 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:53,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162938826] [2022-11-18 20:01:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:53,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:53,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:53,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:53,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:01:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:53,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:01:53,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:01:53,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:53,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:53,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849439937] [2022-11-18 20:01:53,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:53,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162938826] [2022-11-18 20:01:53,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162938826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:53,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:53,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:01:53,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380354394] [2022-11-18 20:01:53,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:53,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:53,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:53,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:53,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:53,474 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:01:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:53,506 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2022-11-18 20:01:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:53,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-11-18 20:01:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:53,509 INFO L225 Difference]: With dead ends: 44 [2022-11-18 20:01:53,509 INFO L226 Difference]: Without dead ends: 40 [2022-11-18 20:01:53,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:53,511 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:53,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:01:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-18 20:01:53,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-18 20:01:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:01:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-11-18 20:01:53,521 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 42 [2022-11-18 20:01:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:53,523 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-11-18 20:01:53,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:01:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-11-18 20:01:53,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:01:53,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:53,525 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1] [2022-11-18 20:01:53,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:53,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 20:01:53,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:53,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1786751912, now seen corresponding path program 1 times [2022-11-18 20:01:53,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:53,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012256581] [2022-11-18 20:01:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:53,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:53,770 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:53,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859537363] [2022-11-18 20:01:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:53,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:53,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:53,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:53,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:01:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:53,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:01:53,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:01:54,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:54,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:54,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012256581] [2022-11-18 20:01:54,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:54,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859537363] [2022-11-18 20:01:54,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859537363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:54,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:54,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:01:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671490171] [2022-11-18 20:01:54,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:54,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:01:54,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:01:54,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:54,097 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:01:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:54,216 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2022-11-18 20:01:54,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:01:54,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2022-11-18 20:01:54,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:54,219 INFO L225 Difference]: With dead ends: 83 [2022-11-18 20:01:54,219 INFO L226 Difference]: Without dead ends: 50 [2022-11-18 20:01:54,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:01:54,221 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 25 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:54,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 114 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:54,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-18 20:01:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2022-11-18 20:01:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:01:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2022-11-18 20:01:54,229 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 47 [2022-11-18 20:01:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:54,230 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2022-11-18 20:01:54,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:01:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2022-11-18 20:01:54,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 20:01:54,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:54,232 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1] [2022-11-18 20:01:54,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:54,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:54,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:54,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2075657686, now seen corresponding path program 1 times [2022-11-18 20:01:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:54,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422100098] [2022-11-18 20:01:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:54,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:54,463 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:54,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976988529] [2022-11-18 20:01:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:54,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:54,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:54,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:01:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:54,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:01:54,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:01:54,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:01:54,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:54,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422100098] [2022-11-18 20:01:54,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:54,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976988529] [2022-11-18 20:01:54,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976988529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:54,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:54,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:01:54,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847689398] [2022-11-18 20:01:54,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:54,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:01:54,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:54,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:01:54,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:01:54,613 INFO L87 Difference]: Start difference. First operand 41 states and 52 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:01:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:54,710 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2022-11-18 20:01:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:01:54,712 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-11-18 20:01:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:54,714 INFO L225 Difference]: With dead ends: 80 [2022-11-18 20:01:54,715 INFO L226 Difference]: Without dead ends: 44 [2022-11-18 20:01:54,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:01:54,716 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:54,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 77 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:54,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-18 20:01:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-11-18 20:01:54,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:01:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-11-18 20:01:54,742 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 50 [2022-11-18 20:01:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:54,742 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-18 20:01:54,743 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:01:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-11-18 20:01:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 20:01:54,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:54,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:54,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:54,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:54,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash 874891816, now seen corresponding path program 1 times [2022-11-18 20:01:54,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:54,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366132359] [2022-11-18 20:01:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:54,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:54,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:54,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813022166] [2022-11-18 20:01:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:54,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:54,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:54,973 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:54,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:01:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:55,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:01:55,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:01:55,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:01:55,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:55,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366132359] [2022-11-18 20:01:55,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:55,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813022166] [2022-11-18 20:01:55,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813022166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:55,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:55,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-18 20:01:55,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634758527] [2022-11-18 20:01:55,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:55,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:01:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:55,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:01:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:01:55,359 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 20:01:55,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:55,561 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2022-11-18 20:01:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:01:55,563 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2022-11-18 20:01:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:55,568 INFO L225 Difference]: With dead ends: 87 [2022-11-18 20:01:55,569 INFO L226 Difference]: Without dead ends: 51 [2022-11-18 20:01:55,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:01:55,577 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 63 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:55,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 89 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:01:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-18 20:01:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2022-11-18 20:01:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:01:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2022-11-18 20:01:55,598 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 52 [2022-11-18 20:01:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:55,599 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2022-11-18 20:01:55,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 20:01:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2022-11-18 20:01:55,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 20:01:55,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:55,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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, 1, 1, 1] [2022-11-18 20:01:55,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:55,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:55,807 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:55,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:55,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1211966936, now seen corresponding path program 2 times [2022-11-18 20:01:55,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:55,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259589170] [2022-11-18 20:01:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:55,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:55,827 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:55,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391796972] [2022-11-18 20:01:55,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:01:55,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:55,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:55,837 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:55,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:01:55,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:01:55,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:55,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:01:55,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:01:55,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:01:56,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:56,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259589170] [2022-11-18 20:01:56,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:56,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391796972] [2022-11-18 20:01:56,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391796972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:56,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:56,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-18 20:01:56,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128997625] [2022-11-18 20:01:56,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:56,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:01:56,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:56,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:01:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:01:56,066 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:01:56,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:56,337 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2022-11-18 20:01:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:01:56,337 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2022-11-18 20:01:56,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:56,339 INFO L225 Difference]: With dead ends: 108 [2022-11-18 20:01:56,339 INFO L226 Difference]: Without dead ends: 75 [2022-11-18 20:01:56,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:01:56,340 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 55 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:56,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 186 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:01:56,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-18 20:01:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2022-11-18 20:01:56,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:01:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2022-11-18 20:01:56,363 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 56 [2022-11-18 20:01:56,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:56,364 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2022-11-18 20:01:56,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:01:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2022-11-18 20:01:56,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 20:01:56,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:56,371 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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] [2022-11-18 20:01:56,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:56,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:01:56,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:56,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash -511912674, now seen corresponding path program 3 times [2022-11-18 20:01:56,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:56,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252739131] [2022-11-18 20:01:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:56,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:56,621 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:56,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471501026] [2022-11-18 20:01:56,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:01:56,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:56,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:56,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:56,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:01:59,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-18 20:01:59,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:59,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-18 20:01:59,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:59,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-18 20:01:59,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2022-11-18 20:01:59,681 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2022-11-18 20:01:59,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2022-11-18 20:01:59,848 INFO L321 Elim1Store]: treesize reduction 98, result has 14.8 percent of original size [2022-11-18 20:01:59,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 59 [2022-11-18 20:02:21,038 INFO L321 Elim1Store]: treesize reduction 163, result has 38.5 percent of original size [2022-11-18 20:02:21,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 132 [2022-11-18 20:02:37,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-18 20:02:37,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:37,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252739131] [2022-11-18 20:02:37,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:02:37,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471501026] [2022-11-18 20:02:37,076 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-18 20:02:37,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:37,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:02:37,277 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:933) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:772) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:346) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 44 more [2022-11-18 20:02:37,281 INFO L158 Benchmark]: Toolchain (without parser) took 46014.34ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 91.0MB in the beginning and 123.6MB in the end (delta: -32.7MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. [2022-11-18 20:02:37,281 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:02:37,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.14ms. Allocated memory is still 119.5MB. Free memory was 90.7MB in the beginning and 94.1MB in the end (delta: -3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:02:37,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.25ms. Allocated memory is still 119.5MB. Free memory was 94.1MB in the beginning and 92.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:02:37,282 INFO L158 Benchmark]: Boogie Preprocessor took 56.27ms. Allocated memory is still 119.5MB. Free memory was 92.2MB in the beginning and 90.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:02:37,282 INFO L158 Benchmark]: RCFGBuilder took 565.99ms. Allocated memory is still 119.5MB. Free memory was 90.8MB in the beginning and 77.3MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 20:02:37,283 INFO L158 Benchmark]: TraceAbstraction took 44920.24ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 76.7MB in the beginning and 123.6MB in the end (delta: -46.9MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. [2022-11-18 20:02:37,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.14ms. Allocated memory is still 119.5MB. Free memory was 90.7MB in the beginning and 94.1MB in the end (delta: -3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.25ms. Allocated memory is still 119.5MB. Free memory was 94.1MB in the beginning and 92.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.27ms. Allocated memory is still 119.5MB. Free memory was 92.2MB in the beginning and 90.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 565.99ms. Allocated memory is still 119.5MB. Free memory was 90.8MB in the beginning and 77.3MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 44920.24ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 76.7MB in the beginning and 123.6MB in the end (delta: -46.9MB). Peak memory consumption was 70.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array23_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- 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 20:02:39,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:02:39,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:02:39,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:02:39,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:02:39,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:02:39,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:02:39,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:02:39,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:02:39,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:02:39,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:02:39,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:02:39,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:02:39,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:02:39,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:02:39,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:02:39,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:02:39,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:02:39,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:02:39,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:02:39,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:02:39,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:02:39,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:02:39,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:02:39,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:02:39,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:02:39,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:02:39,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:02:39,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:02:39,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:02:39,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:02:39,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:02:39,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:02:39,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:02:39,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:02:39,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:02:39,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:02:39,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:02:39,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:02:39,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:02:39,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:02:39,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-18 20:02:39,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:02:39,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:02:39,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:02:39,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:02:39,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:02:39,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:02:39,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:02:39,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:02:39,682 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:02:39,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:02:39,683 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:02:39,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:02:39,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:02:39,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:02:39,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:02:39,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:02:39,686 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:02:39,686 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:02:39,686 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:02:39,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:02:39,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:02:39,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:02:39,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:02:39,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:02:39,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:02:39,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:02:39,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:02:39,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:02:39,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:02:39,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:02:39,690 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:02:39,691 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:02:39,691 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:02:39,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:02:39,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:02:39,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:02:39,692 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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2022-11-18 20:02:40,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:02:40,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:02:40,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:02:40,134 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:02:40,135 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:02:40,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-patterns/array23_pattern.c [2022-11-18 20:02:40,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/data/d8d5954ad/d0752c9d76154a30b271804f42950a46/FLAG3e52643a8 [2022-11-18 20:02:40,749 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:02:40,754 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/sv-benchmarks/c/array-patterns/array23_pattern.c [2022-11-18 20:02:40,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/data/d8d5954ad/d0752c9d76154a30b271804f42950a46/FLAG3e52643a8 [2022-11-18 20:02:41,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/data/d8d5954ad/d0752c9d76154a30b271804f42950a46 [2022-11-18 20:02:41,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:02:41,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:02:41,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:02:41,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:02:41,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:02:41,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5bcee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41, skipping insertion in model container [2022-11-18 20:02:41,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:02:41,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:02:41,342 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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2022-11-18 20:02:41,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:02:41,408 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:02:41,439 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_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2022-11-18 20:02:41,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:02:41,474 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:02:41,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41 WrapperNode [2022-11-18 20:02:41,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:02:41,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:02:41,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:02:41,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:02:41,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,514 INFO L138 Inliner]: procedures = 19, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-11-18 20:02:41,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:02:41,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:02:41,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:02:41,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:02:41,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,543 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:02:41,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:02:41,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:02:41,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:02:41,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (1/1) ... [2022-11-18 20:02:41,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:02:41,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:02:41,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:02:41,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:02:41,625 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2022-11-18 20:02:41,626 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2022-11-18 20:02:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:02:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:02:41,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:02:41,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:02:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:02:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:02:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:02:41,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:02:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:02:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:02:41,711 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:02:41,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:02:42,246 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:02:42,253 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:02:42,253 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 20:02:42,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:02:42 BoogieIcfgContainer [2022-11-18 20:02:42,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:02:42,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:02:42,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:02:42,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:02:42,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:02:41" (1/3) ... [2022-11-18 20:02:42,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6671de08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:02:42, skipping insertion in model container [2022-11-18 20:02:42,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:02:41" (2/3) ... [2022-11-18 20:02:42,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6671de08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:02:42, skipping insertion in model container [2022-11-18 20:02:42,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:02:42" (3/3) ... [2022-11-18 20:02:42,265 INFO L112 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2022-11-18 20:02:42,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:02:42,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:02:42,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:02:42,359 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;@60b28630, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:02:42,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:02:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:02:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:02:42,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:42,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:42,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:42,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1776900022, now seen corresponding path program 1 times [2022-11-18 20:02:42,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:42,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693088501] [2022-11-18 20:02:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:42,391 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 20:02:42,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:42,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:42,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:42,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:02:42,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:42,533 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 20:02:42,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:42,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:42,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693088501] [2022-11-18 20:02:42,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693088501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:42,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:42,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:02:42,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315419854] [2022-11-18 20:02:42,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:02:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:42,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:02:42,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:02:42,574 INFO L87 Difference]: Start difference. First operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:02:42,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:42,605 INFO L93 Difference]: Finished difference Result 75 states and 113 transitions. [2022-11-18 20:02:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:02:42,608 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-18 20:02:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:42,615 INFO L225 Difference]: With dead ends: 75 [2022-11-18 20:02:42,616 INFO L226 Difference]: Without dead ends: 35 [2022-11-18 20:02:42,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 20:02:42,625 INFO L413 NwaCegarLoop]: 49 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, 49 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 20:02:42,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:02:42,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-18 20:02:42,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-18 20:02:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:02:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2022-11-18 20:02:42,681 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 15 [2022-11-18 20:02:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:42,682 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2022-11-18 20:02:42,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:02:42,683 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2022-11-18 20:02:42,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 20:02:42,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:42,689 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-18 20:02:42,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:42,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:42,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:42,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:42,900 INFO L85 PathProgramCache]: Analyzing trace with hash 136661359, now seen corresponding path program 1 times [2022-11-18 20:02:42,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:42,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562714552] [2022-11-18 20:02:42,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:42,901 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 20:02:42,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:42,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:42,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:43,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:02:43,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:02:43,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:43,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:43,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562714552] [2022-11-18 20:02:43,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562714552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:43,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:43,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:02:43,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531603035] [2022-11-18 20:02:43,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:43,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:02:43,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:43,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:02:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:02:43,266 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:02:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:43,363 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2022-11-18 20:02:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:02:43,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2022-11-18 20:02:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:43,365 INFO L225 Difference]: With dead ends: 42 [2022-11-18 20:02:43,365 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 20:02:43,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:02:43,367 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 106 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 20:02:43,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 106 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:02:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 20:02:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-18 20:02:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:02:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2022-11-18 20:02:43,378 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 40 [2022-11-18 20:02:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:43,379 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2022-11-18 20:02:43,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:02:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2022-11-18 20:02:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:02:43,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:43,382 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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 20:02:43,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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)] Ended with exit code 0 [2022-11-18 20:02:43,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:43,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1379198517, now seen corresponding path program 1 times [2022-11-18 20:02:43,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:43,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766716041] [2022-11-18 20:02:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:43,601 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 20:02:43,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:43,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:43,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:43,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:02:43,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:02:44,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:44,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:44,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766716041] [2022-11-18 20:02:44,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766716041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:44,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:44,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:02:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344378509] [2022-11-18 20:02:44,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:44,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:02:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:02:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:02:44,008 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:02:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:44,021 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-11-18 20:02:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:02:44,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-11-18 20:02:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:44,022 INFO L225 Difference]: With dead ends: 73 [2022-11-18 20:02:44,023 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 20:02:44,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:02:44,025 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:44,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 71 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-11-18 20:02:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 20:02:44,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-18 20:02:44,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:02:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-11-18 20:02:44,052 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 45 [2022-11-18 20:02:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:44,052 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-11-18 20:02:44,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:02:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-11-18 20:02:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 20:02:44,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:44,054 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1] [2022-11-18 20:02:44,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:44,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:44,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:44,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:44,255 INFO L85 PathProgramCache]: Analyzing trace with hash 718774395, now seen corresponding path program 1 times [2022-11-18 20:02:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:44,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534838768] [2022-11-18 20:02:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:44,256 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 20:02:44,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:44,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:44,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:44,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:02:44,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:02:44,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:44,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:44,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534838768] [2022-11-18 20:02:44,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534838768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:44,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:44,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:02:44,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167203038] [2022-11-18 20:02:44,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:02:44,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:44,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:02:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:02:44,631 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:02:44,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:44,646 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2022-11-18 20:02:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:02:44,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2022-11-18 20:02:44,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:44,647 INFO L225 Difference]: With dead ends: 78 [2022-11-18 20:02:44,648 INFO L226 Difference]: Without dead ends: 44 [2022-11-18 20:02:44,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:02:44,650 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:44,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 113 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2022-11-18 20:02:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-18 20:02:44,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-18 20:02:44,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:02:44,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2022-11-18 20:02:44,661 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 48 [2022-11-18 20:02:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:44,661 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2022-11-18 20:02:44,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:02:44,662 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2022-11-18 20:02:44,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 20:02:44,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:44,663 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1] [2022-11-18 20:02:44,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:44,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:44,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:44,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:44,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1173811335, now seen corresponding path program 1 times [2022-11-18 20:02:44,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:44,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515437525] [2022-11-18 20:02:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:44,877 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 20:02:44,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:44,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:44,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:45,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:02:45,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:02:45,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:02:45,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:45,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515437525] [2022-11-18 20:02:45,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515437525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:45,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:45,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-18 20:02:45,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719493651] [2022-11-18 20:02:45,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:45,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:02:45,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:45,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:02:45,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:02:45,719 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:02:46,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:46,107 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2022-11-18 20:02:46,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:02:46,108 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 50 [2022-11-18 20:02:46,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:46,109 INFO L225 Difference]: With dead ends: 80 [2022-11-18 20:02:46,109 INFO L226 Difference]: Without dead ends: 46 [2022-11-18 20:02:46,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:02:46,111 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:46,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 135 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 26 Unchecked, 0.4s Time] [2022-11-18 20:02:46,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-18 20:02:46,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-18 20:02:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:02:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2022-11-18 20:02:46,121 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 50 [2022-11-18 20:02:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:46,121 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2022-11-18 20:02:46,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:02:46,122 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-11-18 20:02:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 20:02:46,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:46,123 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, 1, 1] [2022-11-18 20:02:46,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:46,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:46,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:46,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1117435639, now seen corresponding path program 2 times [2022-11-18 20:02:46,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:46,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062223654] [2022-11-18 20:02:46,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:02:46,338 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 20:02:46,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:46,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:46,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:46,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:02:46,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:02:46,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:02:46,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:02:47,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:02:47,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:47,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062223654] [2022-11-18 20:02:47,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062223654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:47,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:47,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-18 20:02:47,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581683054] [2022-11-18 20:02:47,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:47,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:02:47,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:02:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:02:47,632 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 20:02:48,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:48,221 INFO L93 Difference]: Finished difference Result 108 states and 143 transitions. [2022-11-18 20:02:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:02:48,223 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) Word has length 52 [2022-11-18 20:02:48,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:48,226 INFO L225 Difference]: With dead ends: 108 [2022-11-18 20:02:48,226 INFO L226 Difference]: Without dead ends: 104 [2022-11-18 20:02:48,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:02:48,228 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 60 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:48,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 215 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 127 Unchecked, 0.4s Time] [2022-11-18 20:02:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-18 20:02:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 81. [2022-11-18 20:02:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-18 20:02:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 108 transitions. [2022-11-18 20:02:48,249 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 108 transitions. Word has length 52 [2022-11-18 20:02:48,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:48,250 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 108 transitions. [2022-11-18 20:02:48,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 20:02:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 108 transitions. [2022-11-18 20:02:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 20:02:48,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:48,252 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, 1, 1] [2022-11-18 20:02:48,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:48,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:48,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash 299787189, now seen corresponding path program 1 times [2022-11-18 20:02:48,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:48,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364312123] [2022-11-18 20:02:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:48,467 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 20:02:48,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:48,468 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:48,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:48,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:02:48,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:02:48,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:48,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:48,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364312123] [2022-11-18 20:02:48,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364312123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:48,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:48,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:02:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008542003] [2022-11-18 20:02:48,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:48,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:02:48,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:48,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:02:48,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:02:48,625 INFO L87 Difference]: Start difference. First operand 81 states and 108 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:02:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:48,729 INFO L93 Difference]: Finished difference Result 117 states and 157 transitions. [2022-11-18 20:02:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:02:48,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-11-18 20:02:48,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:48,731 INFO L225 Difference]: With dead ends: 117 [2022-11-18 20:02:48,731 INFO L226 Difference]: Without dead ends: 87 [2022-11-18 20:02:48,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:02:48,735 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:48,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 125 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:02:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-18 20:02:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2022-11-18 20:02:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 64 states have internal predecessors, (82), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (19), 15 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-18 20:02:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2022-11-18 20:02:48,752 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 52 [2022-11-18 20:02:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:48,752 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2022-11-18 20:02:48,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:02:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2022-11-18 20:02:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 20:02:48,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:48,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1] [2022-11-18 20:02:48,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:48,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:48,974 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:48,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1544551670, now seen corresponding path program 1 times [2022-11-18 20:02:48,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:48,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824905339] [2022-11-18 20:02:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:48,976 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 20:02:48,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:48,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:48,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:49,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:02:49,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:02:49,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:02:49,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:49,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824905339] [2022-11-18 20:02:49,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824905339] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:49,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:49,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2022-11-18 20:02:49,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715748800] [2022-11-18 20:02:49,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:49,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:02:49,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:49,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:02:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:02:49,726 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:02:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:50,601 INFO L93 Difference]: Finished difference Result 169 states and 231 transitions. [2022-11-18 20:02:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:02:50,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-11-18 20:02:50,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:50,605 INFO L225 Difference]: With dead ends: 169 [2022-11-18 20:02:50,605 INFO L226 Difference]: Without dead ends: 118 [2022-11-18 20:02:50,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:02:50,607 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:50,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 199 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:02:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-18 20:02:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2022-11-18 20:02:50,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 69 states have internal predecessors, (86), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (21), 15 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-18 20:02:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 122 transitions. [2022-11-18 20:02:50,626 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 122 transitions. Word has length 52 [2022-11-18 20:02:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:50,627 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 122 transitions. [2022-11-18 20:02:50,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:02:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 122 transitions. [2022-11-18 20:02:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 20:02:50,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:50,629 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, 1, 1] [2022-11-18 20:02:50,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:50,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:50,842 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:50,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:50,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1034017493, now seen corresponding path program 1 times [2022-11-18 20:02:50,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:50,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685530920] [2022-11-18 20:02:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:50,843 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 20:02:50,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:50,845 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:50,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:50,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:02:50,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:02:50,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:02:50,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:50,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685530920] [2022-11-18 20:02:50,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685530920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:50,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:50,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:02:50,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881484692] [2022-11-18 20:02:50,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:50,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:02:50,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:02:51,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:02:51,000 INFO L87 Difference]: Start difference. First operand 91 states and 122 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 20:02:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:51,181 INFO L93 Difference]: Finished difference Result 152 states and 207 transitions. [2022-11-18 20:02:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:02:51,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-11-18 20:02:51,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:51,186 INFO L225 Difference]: With dead ends: 152 [2022-11-18 20:02:51,186 INFO L226 Difference]: Without dead ends: 95 [2022-11-18 20:02:51,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:02:51,187 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:51,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 130 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:02:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-18 20:02:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2022-11-18 20:02:51,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 69 states have internal predecessors, (88), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (21), 17 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-18 20:02:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2022-11-18 20:02:51,214 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 52 [2022-11-18 20:02:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:51,214 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2022-11-18 20:02:51,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-18 20:02:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2022-11-18 20:02:51,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 20:02:51,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:51,224 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, 1, 1] [2022-11-18 20:02:51,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:51,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:51,437 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:51,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:51,437 INFO L85 PathProgramCache]: Analyzing trace with hash 447211479, now seen corresponding path program 1 times [2022-11-18 20:02:51,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:51,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537345048] [2022-11-18 20:02:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:51,438 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 20:02:51,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:51,441 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:51,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:51,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:02:51,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:02:52,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:02:52,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:52,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537345048] [2022-11-18 20:02:52,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537345048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:52,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:52,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2022-11-18 20:02:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583284961] [2022-11-18 20:02:52,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:52,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:02:52,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:02:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:02:52,727 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:02:53,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:53,792 INFO L93 Difference]: Finished difference Result 182 states and 249 transitions. [2022-11-18 20:02:53,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:02:53,793 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 52 [2022-11-18 20:02:53,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:53,794 INFO L225 Difference]: With dead ends: 182 [2022-11-18 20:02:53,794 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 20:02:53,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:02:53,796 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:53,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 205 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 125 Invalid, 0 Unknown, 70 Unchecked, 0.6s Time] [2022-11-18 20:02:53,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 20:02:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2022-11-18 20:02:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 79 states have internal predecessors, (101), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (21), 17 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-18 20:02:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 137 transitions. [2022-11-18 20:02:53,813 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 137 transitions. Word has length 52 [2022-11-18 20:02:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:53,813 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 137 transitions. [2022-11-18 20:02:53,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:02:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 137 transitions. [2022-11-18 20:02:53,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 20:02:53,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:53,815 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 20:02:53,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:54,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:54,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:54,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:54,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1436977307, now seen corresponding path program 2 times [2022-11-18 20:02:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:54,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44110404] [2022-11-18 20:02:54,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:02:54,029 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 20:02:54,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:54,030 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:54,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:54,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:02:54,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:02:54,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:02:54,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:02:54,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:02:55,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:55,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44110404] [2022-11-18 20:02:55,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44110404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:55,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:55,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-18 20:02:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430861141] [2022-11-18 20:02:55,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:55,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:02:55,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:55,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:02:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:02:55,196 INFO L87 Difference]: Start difference. First operand 103 states and 137 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 20:02:55,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:55,719 INFO L93 Difference]: Finished difference Result 171 states and 229 transitions. [2022-11-18 20:02:55,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:02:55,720 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) Word has length 57 [2022-11-18 20:02:55,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:55,722 INFO L225 Difference]: With dead ends: 171 [2022-11-18 20:02:55,722 INFO L226 Difference]: Without dead ends: 167 [2022-11-18 20:02:55,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:02:55,724 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 87 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:55,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 169 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 197 Unchecked, 0.3s Time] [2022-11-18 20:02:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-18 20:02:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 90. [2022-11-18 20:02:55,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 71 states have internal predecessors, (90), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-18 20:02:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2022-11-18 20:02:55,745 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 57 [2022-11-18 20:02:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:55,745 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2022-11-18 20:02:55,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 20:02:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2022-11-18 20:02:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-18 20:02:55,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:55,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-11-18 20:02:55,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:55,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:55,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:55,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1007097003, now seen corresponding path program 3 times [2022-11-18 20:02:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:55,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454802990] [2022-11-18 20:02:55,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:02:55,962 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 20:02:55,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:55,963 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:55,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:56,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:02:56,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:02:56,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:02:56,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:02:56,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:02:56,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:56,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454802990] [2022-11-18 20:02:56,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454802990] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:56,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:56,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-18 20:02:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718413296] [2022-11-18 20:02:56,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:56,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:02:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:56,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:02:56,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:02:56,975 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:02:58,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:58,409 INFO L93 Difference]: Finished difference Result 149 states and 191 transitions. [2022-11-18 20:02:58,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:02:58,411 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 60 [2022-11-18 20:02:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:58,416 INFO L225 Difference]: With dead ends: 149 [2022-11-18 20:02:58,416 INFO L226 Difference]: Without dead ends: 138 [2022-11-18 20:02:58,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:02:58,418 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 52 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:58,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 185 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 156 Unchecked, 0.5s Time] [2022-11-18 20:02:58,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-18 20:02:58,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 124. [2022-11-18 20:02:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 95 states have internal predecessors, (119), 17 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-18 20:02:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 159 transitions. [2022-11-18 20:02:58,452 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 159 transitions. Word has length 60 [2022-11-18 20:02:58,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:58,453 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 159 transitions. [2022-11-18 20:02:58,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:02:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 159 transitions. [2022-11-18 20:02:58,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-18 20:02:58,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:58,455 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-11-18 20:02:58,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:58,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:58,671 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:58,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:58,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1821248615, now seen corresponding path program 4 times [2022-11-18 20:02:58,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:58,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543856276] [2022-11-18 20:02:58,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:02:58,672 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 20:02:58,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:58,674 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:58,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:02:58,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:02:58,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:02:58,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:02:58,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:02:59,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:02:59,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:59,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543856276] [2022-11-18 20:02:59,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543856276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:59,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:59,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2022-11-18 20:02:59,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686994526] [2022-11-18 20:02:59,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:59,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:02:59,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:02:59,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:02:59,887 INFO L87 Difference]: Start difference. First operand 124 states and 159 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:03:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:01,741 INFO L93 Difference]: Finished difference Result 347 states and 455 transitions. [2022-11-18 20:03:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:03:01,743 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 60 [2022-11-18 20:03:01,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:01,745 INFO L225 Difference]: With dead ends: 347 [2022-11-18 20:03:01,745 INFO L226 Difference]: Without dead ends: 243 [2022-11-18 20:03:01,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:03:01,747 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 142 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:01,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 255 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 149 Invalid, 0 Unknown, 277 Unchecked, 0.7s Time] [2022-11-18 20:03:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-18 20:03:01,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 177. [2022-11-18 20:03:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 144 states have (on average 1.2222222222222223) internal successors, (176), 141 states have internal predecessors, (176), 20 states have call successors, (20), 14 states have call predecessors, (20), 12 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2022-11-18 20:03:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 222 transitions. [2022-11-18 20:03:01,779 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 222 transitions. Word has length 60 [2022-11-18 20:03:01,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:01,779 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 222 transitions. [2022-11-18 20:03:01,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:03:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 222 transitions. [2022-11-18 20:03:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 20:03:01,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:01,781 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 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] [2022-11-18 20:03:01,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:01,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:01,995 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:01,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:01,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1489600397, now seen corresponding path program 5 times [2022-11-18 20:03:01,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:01,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502861641] [2022-11-18 20:03:01,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:03:01,996 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 20:03:01,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:01,997 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:01,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:02,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-18 20:03:02,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:02,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:03:02,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:03:02,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:03:03,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:03,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502861641] [2022-11-18 20:03:03,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502861641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:03,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:03:03,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 24 [2022-11-18 20:03:03,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080888012] [2022-11-18 20:03:03,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:03,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:03:03,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:03:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:03:03,488 INFO L87 Difference]: Start difference. First operand 177 states and 222 transitions. Second operand has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 24 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:03:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:18,314 INFO L93 Difference]: Finished difference Result 756 states and 1036 transitions. [2022-11-18 20:03:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-11-18 20:03:18,317 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 24 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 63 [2022-11-18 20:03:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:18,320 INFO L225 Difference]: With dead ends: 756 [2022-11-18 20:03:18,320 INFO L226 Difference]: Without dead ends: 480 [2022-11-18 20:03:18,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=1961, Invalid=7351, Unknown=0, NotChecked=0, Total=9312 [2022-11-18 20:03:18,324 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 667 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:18,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 423 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-18 20:03:18,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-18 20:03:18,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 244. [2022-11-18 20:03:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 211 states have (on average 1.2701421800947867) internal successors, (268), 208 states have internal predecessors, (268), 20 states have call successors, (20), 14 states have call predecessors, (20), 12 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2022-11-18 20:03:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 314 transitions. [2022-11-18 20:03:18,395 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 314 transitions. Word has length 63 [2022-11-18 20:03:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:18,395 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 314 transitions. [2022-11-18 20:03:18,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 24 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:03:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 314 transitions. [2022-11-18 20:03:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 20:03:18,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:18,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-18 20:03:18,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:18,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:18,610 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash -156800145, now seen corresponding path program 6 times [2022-11-18 20:03:18,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:18,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278908800] [2022-11-18 20:03:18,611 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:03:18,611 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 20:03:18,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:18,612 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:18,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:18,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-11-18 20:03:18,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:18,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:03:18,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:03:19,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:03:20,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:03:20,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278908800] [2022-11-18 20:03:20,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278908800] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:20,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:03:20,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2022-11-18 20:03:20,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845311928] [2022-11-18 20:03:20,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:03:20,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:03:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:03:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:03:20,543 INFO L87 Difference]: Start difference. First operand 244 states and 314 transitions. Second operand has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 21 states have internal predecessors, (76), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 20:03:22,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:22,434 INFO L93 Difference]: Finished difference Result 580 states and 751 transitions. [2022-11-18 20:03:22,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:03:22,435 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 21 states have internal predecessors, (76), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 64 [2022-11-18 20:03:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:22,438 INFO L225 Difference]: With dead ends: 580 [2022-11-18 20:03:22,438 INFO L226 Difference]: Without dead ends: 569 [2022-11-18 20:03:22,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:03:22,440 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 321 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 332 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:22,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 299 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 258 Invalid, 0 Unknown, 332 Unchecked, 1.1s Time] [2022-11-18 20:03:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-11-18 20:03:22,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 355. [2022-11-18 20:03:22,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 307 states have (on average 1.289902280130293) internal successors, (396), 304 states have internal predecessors, (396), 31 states have call successors, (31), 19 states have call predecessors, (31), 16 states have return successors, (40), 31 states have call predecessors, (40), 31 states have call successors, (40) [2022-11-18 20:03:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 467 transitions. [2022-11-18 20:03:22,519 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 467 transitions. Word has length 64 [2022-11-18 20:03:22,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:22,520 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 467 transitions. [2022-11-18 20:03:22,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 21 states have internal predecessors, (76), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 20:03:22,520 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 467 transitions. [2022-11-18 20:03:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:03:22,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:22,522 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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] [2022-11-18 20:03:22,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:22,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:22,737 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash 986341039, now seen corresponding path program 7 times [2022-11-18 20:03:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:22,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733470753] [2022-11-18 20:03:22,737 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:03:22,738 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 20:03:22,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:22,740 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:22,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41fbc2ff-34e3-4dda-ad6a-7da84ea5179a/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 20:03:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-18 20:03:23,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:23,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-11-18 20:03:23,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:23,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2022-11-18 20:03:25,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:25,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:25,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:25,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:25,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2022-11-18 20:03:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:25,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:25,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:25,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:25,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:25,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:25,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-11-18 20:03:28,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:28,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:28,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:28,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:28,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:28,896 INFO L321 Elim1Store]: treesize reduction 121, result has 47.6 percent of original size [2022-11-18 20:03:28,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 143 [2022-11-18 20:03:39,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:39,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:39,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:39,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:39,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:39,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:03:39,657 INFO L321 Elim1Store]: treesize reduction 229, result has 36.9 percent of original size [2022-11-18 20:03:39,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 158 treesize of output 263 [2022-11-18 20:05:00,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:05:00,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:05:00,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:05:00,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:05:15,548 WARN L233 SmtUtils]: Spent 15.23s on a formula simplification. DAG size of input: 320 DAG size of output: 304 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:05:15,556 INFO L321 Elim1Store]: treesize reduction 104, result has 94.0 percent of original size [2022-11-18 20:05:15,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 421 treesize of output 1846