./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8 --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 c0258cad6f5a3f697bac60a20b4b03c973cfd1bb1cab6bf28507067e377df9c4 --- 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-e04fb08 [2022-11-16 11:54:52,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:54:52,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:54:52,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:54:52,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:54:52,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:54:52,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:54:52,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:54:52,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:54:52,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:54:52,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:54:52,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:54:52,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:54:52,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:54:52,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:54:52,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:54:52,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:54:52,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:54:52,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:54:52,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:54:52,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:54:52,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:54:52,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:54:52,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:54:52,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:54:52,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:54:52,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:54:52,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:54:52,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:54:52,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:54:52,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:54:52,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:54:52,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:54:52,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:54:52,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:54:52,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:54:52,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:54:52,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:54:52,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:54:52,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:54:52,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:54:52,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:54:52,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:54:52,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:54:52,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:54:52,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:54:52,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:54:52,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:54:52,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:54:52,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:54:52,793 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:54:52,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:54:52,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:54:52,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:54:52,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:54:52,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:54:52,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:54:52,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:54:52,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:54:52,797 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:54:52,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:54:52,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:54:52,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:54:52,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:54:52,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:54:52,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:54:52,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:52,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:54:52,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:54:52,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:54:52,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:54:52,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:54:52,803 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:54:52,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:54:52,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:54:52,804 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_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0258cad6f5a3f697bac60a20b4b03c973cfd1bb1cab6bf28507067e377df9c4 [2022-11-16 11:54:53,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:54:53,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:54:53,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:54:53,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:54:53,318 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:54:53,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c [2022-11-16 11:54:53,403 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/data/d7f5e4523/dabb313bc2fb4dc1a60ea9e4365fc5c4/FLAG057808956 [2022-11-16 11:54:54,092 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:54:54,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c [2022-11-16 11:54:54,103 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/data/d7f5e4523/dabb313bc2fb4dc1a60ea9e4365fc5c4/FLAG057808956 [2022-11-16 11:54:54,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/data/d7f5e4523/dabb313bc2fb4dc1a60ea9e4365fc5c4 [2022-11-16 11:54:54,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:54:54,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:54:54,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:54:54,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:54:54,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:54:54,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b064fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54, skipping insertion in model container [2022-11-16 11:54:54,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:54:54,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:54:54,657 WARN L229 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_4b762046-f8cf-4776-90bb-a14203f7a45b/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[1997,2010] [2022-11-16 11:54:54,663 WARN L229 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_4b762046-f8cf-4776-90bb-a14203f7a45b/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[2391,2404] [2022-11-16 11:54:54,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:54:54,778 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:54:54,796 WARN L229 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_4b762046-f8cf-4776-90bb-a14203f7a45b/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[1997,2010] [2022-11-16 11:54:54,798 WARN L229 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_4b762046-f8cf-4776-90bb-a14203f7a45b/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[2391,2404] [2022-11-16 11:54:54,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:54:54,857 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:54:54,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54 WrapperNode [2022-11-16 11:54:54,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:54:54,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:54:54,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:54:54,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:54:54,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,917 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211 [2022-11-16 11:54:54,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:54:54,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:54:54,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:54:54,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:54:54,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:54:54,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:54:54,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:54:54,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:54:54,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (1/1) ... [2022-11-16 11:54:54,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:54,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:55,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:54:55,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:54:55,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:54:55,092 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-16 11:54:55,092 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-16 11:54:55,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:54:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:54:55,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:54:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:54:55,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:54:55,238 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:54:55,240 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:54:55,873 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:54:55,886 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:54:55,887 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:54:55,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:55 BoogieIcfgContainer [2022-11-16 11:54:55,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:54:55,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:54:55,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:54:55,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:54:55,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:54:54" (1/3) ... [2022-11-16 11:54:55,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4758a071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:55, skipping insertion in model container [2022-11-16 11:54:55,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:54" (2/3) ... [2022-11-16 11:54:55,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4758a071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:55, skipping insertion in model container [2022-11-16 11:54:55,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:55" (3/3) ... [2022-11-16 11:54:55,900 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-2a.c.cil.c [2022-11-16 11:54:55,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:54:55,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:54:56,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:54:56,011 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;@7a59f158, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:54:56,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:54:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 86 states have (on average 1.6511627906976745) internal successors, (142), 90 states have internal predecessors, (142), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:54:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:54:56,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:56,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:56,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:56,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:56,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1847035396, now seen corresponding path program 1 times [2022-11-16 11:54:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:56,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422654162] [2022-11-16 11:54:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:56,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:56,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:56,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422654162] [2022-11-16 11:54:56,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422654162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:56,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:56,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:54:56,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207658049] [2022-11-16 11:54:56,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:56,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:54:56,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:56,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:54:56,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:54:56,326 INFO L87 Difference]: Start difference. First operand has 99 states, 86 states have (on average 1.6511627906976745) internal successors, (142), 90 states have internal predecessors, (142), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:56,375 INFO L93 Difference]: Finished difference Result 193 states and 316 transitions. [2022-11-16 11:54:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:54:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 11:54:56,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:56,400 INFO L225 Difference]: With dead ends: 193 [2022-11-16 11:54:56,401 INFO L226 Difference]: Without dead ends: 92 [2022-11-16 11:54:56,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:54:56,427 INFO L413 NwaCegarLoop]: 148 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, 148 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 [2022-11-16 11:54:56,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:56,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-16 11:54:56,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-16 11:54:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 80 states have (on average 1.55) internal successors, (124), 83 states have internal predecessors, (124), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:54:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 139 transitions. [2022-11-16 11:54:56,536 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 139 transitions. Word has length 7 [2022-11-16 11:54:56,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:56,537 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 139 transitions. [2022-11-16 11:54:56,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 139 transitions. [2022-11-16 11:54:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:54:56,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:56,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:56,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:54:56,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:56,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1846975814, now seen corresponding path program 1 times [2022-11-16 11:54:56,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:56,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847635752] [2022-11-16 11:54:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:56,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:54:56,603 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:54:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:54:56,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:54:56,654 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:54:56,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 11:54:56,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 11:54:56,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:54:56,668 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 11:54:56,673 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:54:56,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:54:56 BoogieIcfgContainer [2022-11-16 11:54:56,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:54:56,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:54:56,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:54:56,716 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:54:56,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:55" (3/4) ... [2022-11-16 11:54:56,723 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:54:56,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:54:56,727 INFO L158 Benchmark]: Toolchain (without parser) took 2349.61ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 77.1MB in the beginning and 120.1MB in the end (delta: -43.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:54:56,727 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 115.3MB. Free memory was 94.2MB in the beginning and 94.0MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:54:56,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.51ms. Allocated memory is still 115.3MB. Free memory was 77.0MB in the beginning and 85.1MB in the end (delta: -8.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:54:56,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.84ms. Allocated memory is still 115.3MB. Free memory was 85.1MB in the beginning and 83.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:54:56,736 INFO L158 Benchmark]: Boogie Preprocessor took 41.39ms. Allocated memory is still 115.3MB. Free memory was 83.0MB in the beginning and 80.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:54:56,737 INFO L158 Benchmark]: RCFGBuilder took 929.57ms. Allocated memory is still 115.3MB. Free memory was 80.9MB in the beginning and 58.8MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 11:54:56,738 INFO L158 Benchmark]: TraceAbstraction took 822.69ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 58.3MB in the beginning and 121.1MB in the end (delta: -62.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:54:56,738 INFO L158 Benchmark]: Witness Printer took 7.44ms. Allocated memory is still 157.3MB. Free memory was 121.1MB in the beginning and 120.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:54:56,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 115.3MB. Free memory was 94.2MB in the beginning and 94.0MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.51ms. Allocated memory is still 115.3MB. Free memory was 77.0MB in the beginning and 85.1MB in the end (delta: -8.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.84ms. Allocated memory is still 115.3MB. Free memory was 85.1MB in the beginning and 83.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.39ms. Allocated memory is still 115.3MB. Free memory was 83.0MB in the beginning and 80.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 929.57ms. Allocated memory is still 115.3MB. Free memory was 80.9MB in the beginning and 58.8MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 822.69ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 58.3MB in the beginning and 121.1MB in the end (delta: -62.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.44ms. Allocated memory is still 157.3MB. Free memory was 121.1MB in the beginning and 120.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.399f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 99 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 148 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 148 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 11:54:56,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8 --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 c0258cad6f5a3f697bac60a20b4b03c973cfd1bb1cab6bf28507067e377df9c4 --- 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-e04fb08 [2022-11-16 11:54:59,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:54:59,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:54:59,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:54:59,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:54:59,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:54:59,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:54:59,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:54:59,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:54:59,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:54:59,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:54:59,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:54:59,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:54:59,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:54:59,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:54:59,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:54:59,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:54:59,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:54:59,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:54:59,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:54:59,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:54:59,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:54:59,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:54:59,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:54:59,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:54:59,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:54:59,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:54:59,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:54:59,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:54:59,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:54:59,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:54:59,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:54:59,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:54:59,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:54:59,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:54:59,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:54:59,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:54:59,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:54:59,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:54:59,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:54:59,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:54:59,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 11:54:59,784 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:54:59,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:54:59,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:54:59,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:54:59,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:54:59,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:54:59,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:54:59,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:54:59,794 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:54:59,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:54:59,797 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:54:59,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:54:59,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:54:59,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:54:59,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:54:59,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:54:59,799 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:54:59,799 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:54:59,800 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:54:59,800 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:54:59,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:54:59,801 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:54:59,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:54:59,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:54:59,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:54:59,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:54:59,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:59,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:54:59,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:54:59,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:54:59,803 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:54:59,804 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:54:59,804 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:54:59,805 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:54:59,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:54:59,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:54:59,805 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_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0258cad6f5a3f697bac60a20b4b03c973cfd1bb1cab6bf28507067e377df9c4 [2022-11-16 11:55:00,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:55:00,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:55:00,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:55:00,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:55:00,365 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:55:00,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c [2022-11-16 11:55:00,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/data/e3a56dadc/77ea86cc9267431393fef0d68d36a248/FLAGd62dc41c3 [2022-11-16 11:55:01,167 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:55:01,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c [2022-11-16 11:55:01,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/data/e3a56dadc/77ea86cc9267431393fef0d68d36a248/FLAGd62dc41c3 [2022-11-16 11:55:01,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/data/e3a56dadc/77ea86cc9267431393fef0d68d36a248 [2022-11-16 11:55:01,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:55:01,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:55:01,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:55:01,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:55:01,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:55:01,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:55:01" (1/1) ... [2022-11-16 11:55:01,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a4446b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:01, skipping insertion in model container [2022-11-16 11:55:01,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:55:01" (1/1) ... [2022-11-16 11:55:01,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:55:01,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:55:01,757 WARN L229 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_4b762046-f8cf-4776-90bb-a14203f7a45b/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[1997,2010] [2022-11-16 11:55:01,764 WARN L229 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_4b762046-f8cf-4776-90bb-a14203f7a45b/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[2391,2404] [2022-11-16 11:55:01,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:55:01,946 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:55:01,993 WARN L229 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_4b762046-f8cf-4776-90bb-a14203f7a45b/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[1997,2010] [2022-11-16 11:55:01,995 WARN L229 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_4b762046-f8cf-4776-90bb-a14203f7a45b/sv-benchmarks/c/combinations/square_6+soft_float_1-2a.c.cil.c[2391,2404] [2022-11-16 11:55:02,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:55:02,085 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:55:02,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02 WrapperNode [2022-11-16 11:55:02,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:55:02,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:55:02,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:55:02,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:55:02,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,178 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2022-11-16 11:55:02,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:55:02,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:55:02,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:55:02,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:55:02,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,256 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:55:02,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:55:02,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:55:02,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:55:02,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (1/1) ... [2022-11-16 11:55:02,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:55:02,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:55:02,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:55:02,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:55:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:55:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:55:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-16 11:55:02,400 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-16 11:55:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:55:02,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:55:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:55:02,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:55:02,564 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:55:02,567 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:55:05,326 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:55:05,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:55:05,337 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:55:05,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:55:05 BoogieIcfgContainer [2022-11-16 11:55:05,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:55:05,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:55:05,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:55:05,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:55:05,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:55:01" (1/3) ... [2022-11-16 11:55:05,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd831f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:55:05, skipping insertion in model container [2022-11-16 11:55:05,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:55:02" (2/3) ... [2022-11-16 11:55:05,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd831f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:55:05, skipping insertion in model container [2022-11-16 11:55:05,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:55:05" (3/3) ... [2022-11-16 11:55:05,352 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-2a.c.cil.c [2022-11-16 11:55:05,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:55:05,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:55:05,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:55:05,451 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;@197b3134, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:55:05,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:55:05,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:55:05,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:55:05,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:05,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:05,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:05,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-16 11:55:05,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:55:05,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052232701] [2022-11-16 11:55:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:05,497 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 [2022-11-16 11:55:05,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:55:05,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:55:05,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:55:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:55:06,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:55:06,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:55:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:55:06,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:55:06,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:55:06,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052232701] [2022-11-16 11:55:06,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052232701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:55:06,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:55:06,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:55:06,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673089278] [2022-11-16 11:55:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:55:06,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:55:06,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:55:06,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:55:06,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:55:06,270 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:06,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:55:06,312 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2022-11-16 11:55:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:55:06,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 11:55:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:55:06,351 INFO L225 Difference]: With dead ends: 157 [2022-11-16 11:55:06,351 INFO L226 Difference]: Without dead ends: 74 [2022-11-16 11:55:06,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:55:06,359 INFO L413 NwaCegarLoop]: 116 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, 116 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 [2022-11-16 11:55:06,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:55:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-16 11:55:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-16 11:55:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:55:06,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2022-11-16 11:55:06,417 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2022-11-16 11:55:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:55:06,417 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2022-11-16 11:55:06,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:55:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2022-11-16 11:55:06,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:55:06,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:55:06,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:55:06,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:55:06,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:55:06,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:55:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:55:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-16 11:55:06,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:55:06,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911696745] [2022-11-16 11:55:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:55:06,634 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 [2022-11-16 11:55:06,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:55:06,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:55:06,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:07:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:01,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:01,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:16,326 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-11-16 12:07:50,118 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-11-16 12:07:52,171 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-11-16 12:07:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:52,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:52,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:07:52,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911696745] [2022-11-16 12:07:52,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911696745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:52,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:52,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:52,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735725322] [2022-11-16 12:07:52,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:52,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:07:52,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:07:52,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:07:52,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-11-16 12:07:52,177 INFO L87 Difference]: Start difference. First operand 74 states and 107 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:54,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:07:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:55,160 INFO L93 Difference]: Finished difference Result 74 states and 107 transitions. [2022-11-16 12:07:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:07:55,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 12:07:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:55,163 INFO L225 Difference]: With dead ends: 74 [2022-11-16 12:07:55,164 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 12:07:55,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=18, Invalid=17, Unknown=3, NotChecked=18, Total=56 [2022-11-16 12:07:55,166 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 103 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:55,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 274 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 1 Unknown, 209 Unchecked, 2.7s Time] [2022-11-16 12:07:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 12:07:55,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-16 12:07:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.5) internal successors, (87), 60 states have internal predecessors, (87), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:07:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 102 transitions. [2022-11-16 12:07:55,180 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 102 transitions. Word has length 7 [2022-11-16 12:07:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:55,181 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 102 transitions. [2022-11-16 12:07:55,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 102 transitions. [2022-11-16 12:07:55,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:07:55,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:55,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:55,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:55,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:07:55,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:55,413 INFO L85 PathProgramCache]: Analyzing trace with hash -567365317, now seen corresponding path program 1 times [2022-11-16 12:07:55,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:07:55,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416545484] [2022-11-16 12:07:55,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:55,415 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 [2022-11-16 12:07:55,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:07:55,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:07:55,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:07:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:55,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:07:55,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:07:55,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:07:56,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:07:56,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416545484] [2022-11-16 12:07:56,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416545484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:56,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:07:56,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-16 12:07:56,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137826918] [2022-11-16 12:07:56,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:56,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:56,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:07:56,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:56,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:56,337 INFO L87 Difference]: Start difference. First operand 69 states and 102 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:07:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:56,856 INFO L93 Difference]: Finished difference Result 162 states and 250 transitions. [2022-11-16 12:07:56,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:07:56,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-16 12:07:56,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:56,861 INFO L225 Difference]: With dead ends: 162 [2022-11-16 12:07:56,862 INFO L226 Difference]: Without dead ends: 118 [2022-11-16 12:07:56,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:56,864 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 58 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:56,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 733 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:07:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-16 12:07:56,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 81. [2022-11-16 12:07:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 69 states have internal predecessors, (97), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-16 12:07:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 121 transitions. [2022-11-16 12:07:56,889 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 121 transitions. Word has length 33 [2022-11-16 12:07:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:56,889 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 121 transitions. [2022-11-16 12:07:56,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:07:56,890 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 121 transitions. [2022-11-16 12:07:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:07:56,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:56,892 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:56,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:07:57,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:07:57,113 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1463451301, now seen corresponding path program 1 times [2022-11-16 12:07:57,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:07:57,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303161599] [2022-11-16 12:07:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:57,118 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 [2022-11-16 12:07:57,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:07:57,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:07:57,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:07:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:07:57,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:07:57,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:07:57,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:07:57,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303161599] [2022-11-16 12:07:57,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303161599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:57,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:07:57,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-16 12:07:57,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939073447] [2022-11-16 12:07:57,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:57,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:57,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:07:57,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:57,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:57,846 INFO L87 Difference]: Start difference. First operand 81 states and 121 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:07:58,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:58,440 INFO L93 Difference]: Finished difference Result 179 states and 273 transitions. [2022-11-16 12:07:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:07:58,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2022-11-16 12:07:58,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:58,443 INFO L225 Difference]: With dead ends: 179 [2022-11-16 12:07:58,443 INFO L226 Difference]: Without dead ends: 132 [2022-11-16 12:07:58,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:58,445 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 56 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:58,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 456 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:07:58,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-16 12:07:58,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2022-11-16 12:07:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 105 states have internal predecessors, (148), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 18 states have call predecessors, (22), 15 states have call successors, (22) [2022-11-16 12:07:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 186 transitions. [2022-11-16 12:07:58,470 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 186 transitions. Word has length 37 [2022-11-16 12:07:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:58,471 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 186 transitions. [2022-11-16 12:07:58,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:07:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 186 transitions. [2022-11-16 12:07:58,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:07:58,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:58,474 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:58,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-16 12:07:58,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:07:58,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:58,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1205285863, now seen corresponding path program 1 times [2022-11-16 12:07:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:07:58,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168865702] [2022-11-16 12:07:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:58,688 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 [2022-11-16 12:07:58,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:07:58,691 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:07:58,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:07:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:58,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:07:58,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:07:59,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:59,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:07:59,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168865702] [2022-11-16 12:07:59,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168865702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:59,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:59,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:07:59,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196201185] [2022-11-16 12:07:59,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:59,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:59,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:07:59,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:59,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:59,071 INFO L87 Difference]: Start difference. First operand 124 states and 186 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:07:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:59,706 INFO L93 Difference]: Finished difference Result 280 states and 423 transitions. [2022-11-16 12:07:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:07:59,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-11-16 12:07:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:59,710 INFO L225 Difference]: With dead ends: 280 [2022-11-16 12:07:59,710 INFO L226 Difference]: Without dead ends: 210 [2022-11-16 12:07:59,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:07:59,712 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 53 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:59,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 453 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:07:59,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-16 12:07:59,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 206. [2022-11-16 12:07:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 178 states have (on average 1.4157303370786516) internal successors, (252), 177 states have internal predecessors, (252), 24 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (30), 30 states have call predecessors, (30), 23 states have call successors, (30) [2022-11-16 12:07:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 306 transitions. [2022-11-16 12:07:59,739 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 306 transitions. Word has length 37 [2022-11-16 12:07:59,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:59,739 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 306 transitions. [2022-11-16 12:07:59,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:07:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 306 transitions. [2022-11-16 12:07:59,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:07:59,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:59,752 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:59,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:07:59,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:07:59,966 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:59,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:59,967 INFO L85 PathProgramCache]: Analyzing trace with hash -525227493, now seen corresponding path program 1 times [2022-11-16 12:07:59,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:07:59,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016238564] [2022-11-16 12:07:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:59,968 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 [2022-11-16 12:07:59,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:07:59,969 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:07:59,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:00,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:08:00,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:08:00,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:00,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:00,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016238564] [2022-11-16 12:08:00,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016238564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:00,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:00,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:08:00,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024167699] [2022-11-16 12:08:00,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:00,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:00,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:00,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:00,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:00,519 INFO L87 Difference]: Start difference. First operand 206 states and 306 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:01,377 INFO L93 Difference]: Finished difference Result 294 states and 440 transitions. [2022-11-16 12:08:01,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:08:01,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-11-16 12:08:01,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:01,381 INFO L225 Difference]: With dead ends: 294 [2022-11-16 12:08:01,385 INFO L226 Difference]: Without dead ends: 230 [2022-11-16 12:08:01,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:08:01,389 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 105 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:01,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 539 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:08:01,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-16 12:08:01,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 188. [2022-11-16 12:08:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 164 states have (on average 1.3902439024390243) internal successors, (228), 163 states have internal predecessors, (228), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2022-11-16 12:08:01,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 274 transitions. [2022-11-16 12:08:01,415 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 274 transitions. Word has length 37 [2022-11-16 12:08:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:01,415 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 274 transitions. [2022-11-16 12:08:01,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 274 transitions. [2022-11-16 12:08:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 12:08:01,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:01,418 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:01,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:01,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:01,631 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1910499068, now seen corresponding path program 1 times [2022-11-16 12:08:01,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:01,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416043526] [2022-11-16 12:08:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:01,632 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 [2022-11-16 12:08:01,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:01,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:01,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:01,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:08:01,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:08:02,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:08:02,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:02,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416043526] [2022-11-16 12:08:02,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416043526] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:02,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:08:02,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-16 12:08:02,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343137202] [2022-11-16 12:08:02,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:02,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:08:02,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:08:02,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:02,711 INFO L87 Difference]: Start difference. First operand 188 states and 274 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:08:04,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:04,027 INFO L93 Difference]: Finished difference Result 276 states and 410 transitions. [2022-11-16 12:08:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:08:04,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2022-11-16 12:08:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:04,038 INFO L225 Difference]: With dead ends: 276 [2022-11-16 12:08:04,040 INFO L226 Difference]: Without dead ends: 238 [2022-11-16 12:08:04,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:08:04,042 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 198 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:04,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 645 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:08:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-16 12:08:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 179. [2022-11-16 12:08:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 157 states have (on average 1.3821656050955413) internal successors, (217), 156 states have internal predecessors, (217), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (24), 24 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-16 12:08:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 259 transitions. [2022-11-16 12:08:04,091 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 259 transitions. Word has length 41 [2022-11-16 12:08:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:04,092 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 259 transitions. [2022-11-16 12:08:04,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:08:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 259 transitions. [2022-11-16 12:08:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:08:04,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:04,108 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:04,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:04,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:04,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:04,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1938435092, now seen corresponding path program 1 times [2022-11-16 12:08:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:04,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522135656] [2022-11-16 12:08:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:04,310 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 [2022-11-16 12:08:04,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:04,312 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:04,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:04,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:08:04,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:08:04,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:04,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:04,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522135656] [2022-11-16 12:08:04,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522135656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:04,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:04,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:08:04,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469916662] [2022-11-16 12:08:04,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:04,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:08:04,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:04,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:08:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:04,628 INFO L87 Difference]: Start difference. First operand 179 states and 259 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:04,818 INFO L93 Difference]: Finished difference Result 332 states and 488 transitions. [2022-11-16 12:08:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:08:04,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-16 12:08:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:04,823 INFO L225 Difference]: With dead ends: 332 [2022-11-16 12:08:04,823 INFO L226 Difference]: Without dead ends: 266 [2022-11-16 12:08:04,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:04,828 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 68 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:04,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 328 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:08:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-16 12:08:04,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 234. [2022-11-16 12:08:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 210 states have (on average 1.3428571428571427) internal successors, (282), 209 states have internal predecessors, (282), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (26), 26 states have call predecessors, (26), 19 states have call successors, (26) [2022-11-16 12:08:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 328 transitions. [2022-11-16 12:08:04,863 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 328 transitions. Word has length 44 [2022-11-16 12:08:04,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:04,864 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 328 transitions. [2022-11-16 12:08:04,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:04,864 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 328 transitions. [2022-11-16 12:08:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:08:04,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:04,878 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:04,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:05,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:05,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:05,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1309251479, now seen corresponding path program 1 times [2022-11-16 12:08:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:05,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245824846] [2022-11-16 12:08:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:05,085 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 [2022-11-16 12:08:05,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:05,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:05,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:05,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:08:05,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:08:05,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:05,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:05,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245824846] [2022-11-16 12:08:05,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245824846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:05,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:05,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:08:05,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85931671] [2022-11-16 12:08:05,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:05,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:08:05,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:05,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:08:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:05,362 INFO L87 Difference]: Start difference. First operand 234 states and 328 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:08:05,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:05,775 INFO L93 Difference]: Finished difference Result 409 states and 570 transitions. [2022-11-16 12:08:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:08:05,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-11-16 12:08:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:05,779 INFO L225 Difference]: With dead ends: 409 [2022-11-16 12:08:05,779 INFO L226 Difference]: Without dead ends: 179 [2022-11-16 12:08:05,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:05,784 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 27 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:05,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 250 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:08:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-16 12:08:05,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 167. [2022-11-16 12:08:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 149 states have (on average 1.3020134228187918) internal successors, (194), 151 states have internal predecessors, (194), 13 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (18), 15 states have call predecessors, (18), 12 states have call successors, (18) [2022-11-16 12:08:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2022-11-16 12:08:05,809 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 44 [2022-11-16 12:08:05,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:05,809 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2022-11-16 12:08:05,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:08:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2022-11-16 12:08:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:08:05,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:05,814 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:05,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:06,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:06,028 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:06,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:06,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1643290396, now seen corresponding path program 1 times [2022-11-16 12:08:06,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:06,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015759755] [2022-11-16 12:08:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:06,029 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 [2022-11-16 12:08:06,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:06,031 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:06,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:06,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:08:06,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:08:07,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:08:07,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:07,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015759755] [2022-11-16 12:08:07,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015759755] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:07,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:07,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:08:07,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386071777] [2022-11-16 12:08:07,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:07,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:08:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:08:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:08:07,982 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:10,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:10,540 INFO L93 Difference]: Finished difference Result 317 states and 456 transitions. [2022-11-16 12:08:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:08:10,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-16 12:08:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:10,543 INFO L225 Difference]: With dead ends: 317 [2022-11-16 12:08:10,543 INFO L226 Difference]: Without dead ends: 281 [2022-11-16 12:08:10,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:08:10,545 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 188 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:10,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 511 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-16 12:08:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-16 12:08:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 205. [2022-11-16 12:08:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 183 states have (on average 1.2950819672131149) internal successors, (237), 186 states have internal predecessors, (237), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (22), 19 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-16 12:08:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2022-11-16 12:08:10,575 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 45 [2022-11-16 12:08:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:10,577 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2022-11-16 12:08:10,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2022-11-16 12:08:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:08:10,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:10,579 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:10,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:10,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:10,791 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:10,792 INFO L85 PathProgramCache]: Analyzing trace with hash -876669538, now seen corresponding path program 1 times [2022-11-16 12:08:10,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:10,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373521647] [2022-11-16 12:08:10,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:10,792 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 [2022-11-16 12:08:10,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:10,795 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:10,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:08:10,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:08:11,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:11,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:11,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373521647] [2022-11-16 12:08:11,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373521647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:11,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:11,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:08:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204510478] [2022-11-16 12:08:11,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:11,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:08:11,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:08:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:11,054 INFO L87 Difference]: Start difference. First operand 205 states and 276 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:11,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:11,284 INFO L93 Difference]: Finished difference Result 212 states and 282 transitions. [2022-11-16 12:08:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:08:11,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-16 12:08:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:11,286 INFO L225 Difference]: With dead ends: 212 [2022-11-16 12:08:11,286 INFO L226 Difference]: Without dead ends: 205 [2022-11-16 12:08:11,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:08:11,288 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 5 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:11,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 381 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:08:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-16 12:08:11,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-11-16 12:08:11,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 183 states have (on average 1.278688524590164) internal successors, (234), 186 states have internal predecessors, (234), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (22), 19 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-16 12:08:11,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 273 transitions. [2022-11-16 12:08:11,319 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 273 transitions. Word has length 45 [2022-11-16 12:08:11,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:11,320 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 273 transitions. [2022-11-16 12:08:11,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 273 transitions. [2022-11-16 12:08:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:08:11,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:11,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:11,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:11,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:11,536 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:11,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash 457064955, now seen corresponding path program 1 times [2022-11-16 12:08:11,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:11,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610449470] [2022-11-16 12:08:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:11,537 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 [2022-11-16 12:08:11,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:11,538 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:11,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:08:11,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:08:12,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:12,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:12,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610449470] [2022-11-16 12:08:12,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610449470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:12,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:12,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:08:12,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019762445] [2022-11-16 12:08:12,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:12,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:08:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:08:12,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:08:12,142 INFO L87 Difference]: Start difference. First operand 205 states and 273 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:12,599 INFO L93 Difference]: Finished difference Result 248 states and 334 transitions. [2022-11-16 12:08:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:08:12,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-16 12:08:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:12,603 INFO L225 Difference]: With dead ends: 248 [2022-11-16 12:08:12,603 INFO L226 Difference]: Without dead ends: 246 [2022-11-16 12:08:12,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:12,604 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 38 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:12,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 596 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-11-16 12:08:12,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-16 12:08:12,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 209. [2022-11-16 12:08:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 186 states have (on average 1.2741935483870968) internal successors, (237), 189 states have internal predecessors, (237), 17 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (22), 19 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-16 12:08:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 276 transitions. [2022-11-16 12:08:12,630 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 276 transitions. Word has length 45 [2022-11-16 12:08:12,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:12,631 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 276 transitions. [2022-11-16 12:08:12,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 276 transitions. [2022-11-16 12:08:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:08:12,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:12,633 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:12,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:12,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:12,847 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash 514323257, now seen corresponding path program 1 times [2022-11-16 12:08:12,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:12,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004585758] [2022-11-16 12:08:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:12,848 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 [2022-11-16 12:08:12,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:12,849 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:12,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:12,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:08:12,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:08:13,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:13,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:13,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004585758] [2022-11-16 12:08:13,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004585758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:13,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:13,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:08:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934113346] [2022-11-16 12:08:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:13,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:08:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:08:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:08:13,401 INFO L87 Difference]: Start difference. First operand 209 states and 276 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:13,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:13,807 INFO L93 Difference]: Finished difference Result 262 states and 350 transitions. [2022-11-16 12:08:13,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:08:13,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-16 12:08:13,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:13,810 INFO L225 Difference]: With dead ends: 262 [2022-11-16 12:08:13,811 INFO L226 Difference]: Without dead ends: 260 [2022-11-16 12:08:13,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:13,812 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:13,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 469 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 12 Unchecked, 0.2s Time] [2022-11-16 12:08:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-16 12:08:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 213. [2022-11-16 12:08:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 189 states have (on average 1.2698412698412698) internal successors, (240), 192 states have internal predecessors, (240), 17 states have call successors, (17), 4 states have call predecessors, (17), 6 states have return successors, (22), 19 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-16 12:08:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 279 transitions. [2022-11-16 12:08:13,839 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 279 transitions. Word has length 45 [2022-11-16 12:08:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:13,839 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 279 transitions. [2022-11-16 12:08:13,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 279 transitions. [2022-11-16 12:08:13,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:08:13,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:13,841 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:13,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:14,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:14,057 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:14,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:14,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1895517033, now seen corresponding path program 1 times [2022-11-16 12:08:14,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:14,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528610937] [2022-11-16 12:08:14,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:14,058 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 [2022-11-16 12:08:14,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:14,059 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:14,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:08:14,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:08:14,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:14,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:14,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528610937] [2022-11-16 12:08:14,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528610937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:14,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:14,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:08:14,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251668120] [2022-11-16 12:08:14,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:14,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:08:14,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:14,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:08:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:14,338 INFO L87 Difference]: Start difference. First operand 213 states and 279 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:14,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:14,524 INFO L93 Difference]: Finished difference Result 352 states and 474 transitions. [2022-11-16 12:08:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:08:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-11-16 12:08:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:14,534 INFO L225 Difference]: With dead ends: 352 [2022-11-16 12:08:14,534 INFO L226 Difference]: Without dead ends: 300 [2022-11-16 12:08:14,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:14,536 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 77 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:14,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 315 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:08:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-16 12:08:14,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 232. [2022-11-16 12:08:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 207 states have (on average 1.2753623188405796) internal successors, (264), 209 states have internal predecessors, (264), 18 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-16 12:08:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 305 transitions. [2022-11-16 12:08:14,565 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 305 transitions. Word has length 46 [2022-11-16 12:08:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:14,565 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 305 transitions. [2022-11-16 12:08:14,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 305 transitions. [2022-11-16 12:08:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 12:08:14,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:14,567 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:14,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:14,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:14,782 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1657751029, now seen corresponding path program 1 times [2022-11-16 12:08:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:14,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123806635] [2022-11-16 12:08:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:14,783 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 [2022-11-16 12:08:14,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:14,785 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:14,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:14,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:08:14,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:08:14,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:14,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:14,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123806635] [2022-11-16 12:08:14,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123806635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:14,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:14,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:08:14,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956217041] [2022-11-16 12:08:14,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:14,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:08:14,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:14,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:08:14,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:14,946 INFO L87 Difference]: Start difference. First operand 232 states and 305 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:15,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:15,091 INFO L93 Difference]: Finished difference Result 247 states and 321 transitions. [2022-11-16 12:08:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:08:15,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2022-11-16 12:08:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:15,094 INFO L225 Difference]: With dead ends: 247 [2022-11-16 12:08:15,094 INFO L226 Difference]: Without dead ends: 208 [2022-11-16 12:08:15,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:15,096 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 285 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 [2022-11-16 12:08:15,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:08:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-16 12:08:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-11-16 12:08:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 183 states have (on average 1.289617486338798) internal successors, (236), 186 states have internal predecessors, (236), 18 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (21), 19 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-16 12:08:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 275 transitions. [2022-11-16 12:08:15,120 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 275 transitions. Word has length 49 [2022-11-16 12:08:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:15,120 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 275 transitions. [2022-11-16 12:08:15,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 275 transitions. [2022-11-16 12:08:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 12:08:15,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:15,123 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] [2022-11-16 12:08:15,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:15,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:15,338 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:15,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1176937396, now seen corresponding path program 1 times [2022-11-16 12:08:15,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:15,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452775362] [2022-11-16 12:08:15,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:15,339 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 [2022-11-16 12:08:15,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:15,340 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:15,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:15,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:08:15,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:08:15,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:15,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:15,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452775362] [2022-11-16 12:08:15,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452775362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:15,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:15,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:08:15,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731254080] [2022-11-16 12:08:15,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:15,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:08:15,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:15,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:08:15,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:15,665 INFO L87 Difference]: Start difference. First operand 208 states and 275 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:16,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:16,377 INFO L93 Difference]: Finished difference Result 335 states and 446 transitions. [2022-11-16 12:08:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:08:16,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-16 12:08:16,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:16,381 INFO L225 Difference]: With dead ends: 335 [2022-11-16 12:08:16,381 INFO L226 Difference]: Without dead ends: 293 [2022-11-16 12:08:16,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:08:16,382 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 217 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:16,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 405 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:08:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-16 12:08:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 208. [2022-11-16 12:08:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 183 states have (on average 1.278688524590164) internal successors, (234), 186 states have internal predecessors, (234), 18 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (21), 19 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-16 12:08:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 273 transitions. [2022-11-16 12:08:16,410 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 273 transitions. Word has length 50 [2022-11-16 12:08:16,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:16,410 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 273 transitions. [2022-11-16 12:08:16,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 273 transitions. [2022-11-16 12:08:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 12:08:16,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:16,412 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:16,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:16,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:16,627 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:16,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash -475872818, now seen corresponding path program 1 times [2022-11-16 12:08:16,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:16,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091665214] [2022-11-16 12:08:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:16,628 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 [2022-11-16 12:08:16,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:16,629 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:16,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 12:08:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:16,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:08:16,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:08:16,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:16,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:16,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091665214] [2022-11-16 12:08:16,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091665214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:16,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:16,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:08:16,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520439107] [2022-11-16 12:08:16,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:16,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:08:16,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:08:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:16,850 INFO L87 Difference]: Start difference. First operand 208 states and 273 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:17,282 INFO L93 Difference]: Finished difference Result 326 states and 423 transitions. [2022-11-16 12:08:17,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:08:17,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2022-11-16 12:08:17,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:17,285 INFO L225 Difference]: With dead ends: 326 [2022-11-16 12:08:17,285 INFO L226 Difference]: Without dead ends: 295 [2022-11-16 12:08:17,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:17,286 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 114 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:17,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 261 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:08:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-16 12:08:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 212. [2022-11-16 12:08:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 187 states have (on average 1.2727272727272727) internal successors, (238), 190 states have internal predecessors, (238), 18 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (21), 19 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-16 12:08:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 277 transitions. [2022-11-16 12:08:17,317 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 277 transitions. Word has length 50 [2022-11-16 12:08:17,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:17,318 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 277 transitions. [2022-11-16 12:08:17,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 277 transitions. [2022-11-16 12:08:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 12:08:17,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:17,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:17,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:17,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:17,535 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:17,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:17,536 INFO L85 PathProgramCache]: Analyzing trace with hash 33068664, now seen corresponding path program 1 times [2022-11-16 12:08:17,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:17,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141250556] [2022-11-16 12:08:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:17,537 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 [2022-11-16 12:08:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:17,538 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:17,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (19)] Waiting until timeout for monitored process [2022-11-16 12:08:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:17,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:08:17,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:08:18,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:18,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:18,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141250556] [2022-11-16 12:08:18,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141250556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:18,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:18,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:08:18,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739333325] [2022-11-16 12:08:18,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:18,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:18,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:18,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:18,085 INFO L87 Difference]: Start difference. First operand 212 states and 277 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:20,019 INFO L93 Difference]: Finished difference Result 328 states and 444 transitions. [2022-11-16 12:08:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:08:20,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-11-16 12:08:20,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:20,021 INFO L225 Difference]: With dead ends: 328 [2022-11-16 12:08:20,022 INFO L226 Difference]: Without dead ends: 304 [2022-11-16 12:08:20,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:08:20,023 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 180 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:20,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 578 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 12:08:20,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-16 12:08:20,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 249. [2022-11-16 12:08:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 220 states have (on average 1.268181818181818) internal successors, (279), 224 states have internal predecessors, (279), 22 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (25), 23 states have call predecessors, (25), 21 states have call successors, (25) [2022-11-16 12:08:20,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 326 transitions. [2022-11-16 12:08:20,060 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 326 transitions. Word has length 51 [2022-11-16 12:08:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:20,060 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 326 transitions. [2022-11-16 12:08:20,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 326 transitions. [2022-11-16 12:08:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 12:08:20,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:20,063 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:20,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:20,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:20,275 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:20,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2004133062, now seen corresponding path program 1 times [2022-11-16 12:08:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:20,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390967698] [2022-11-16 12:08:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:20,276 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 [2022-11-16 12:08:20,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:20,277 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:20,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (20)] Waiting until timeout for monitored process [2022-11-16 12:08:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:20,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:08:20,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:08:20,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:20,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:20,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390967698] [2022-11-16 12:08:20,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390967698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:20,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:20,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:08:20,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269151021] [2022-11-16 12:08:20,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:20,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:08:20,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:20,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:08:20,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:20,553 INFO L87 Difference]: Start difference. First operand 249 states and 326 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:20,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:20,744 INFO L93 Difference]: Finished difference Result 302 states and 390 transitions. [2022-11-16 12:08:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:08:20,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-11-16 12:08:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:20,746 INFO L225 Difference]: With dead ends: 302 [2022-11-16 12:08:20,746 INFO L226 Difference]: Without dead ends: 268 [2022-11-16 12:08:20,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:20,747 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 87 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:20,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 273 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:08:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-16 12:08:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 249. [2022-11-16 12:08:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 220 states have (on average 1.2136363636363636) internal successors, (267), 224 states have internal predecessors, (267), 22 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (25), 23 states have call predecessors, (25), 21 states have call successors, (25) [2022-11-16 12:08:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 314 transitions. [2022-11-16 12:08:20,779 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 314 transitions. Word has length 51 [2022-11-16 12:08:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:20,779 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 314 transitions. [2022-11-16 12:08:20,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 314 transitions. [2022-11-16 12:08:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 12:08:20,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:20,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:20,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:20,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:20,993 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:20,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:20,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2071979516, now seen corresponding path program 1 times [2022-11-16 12:08:20,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:20,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691760309] [2022-11-16 12:08:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:20,994 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 [2022-11-16 12:08:20,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:20,995 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:20,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (21)] Waiting until timeout for monitored process [2022-11-16 12:08:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:21,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:08:21,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:08:21,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:21,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:21,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691760309] [2022-11-16 12:08:21,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691760309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:21,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:21,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:08:21,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933438577] [2022-11-16 12:08:21,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:21,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:08:21,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:21,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:08:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:21,162 INFO L87 Difference]: Start difference. First operand 249 states and 314 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:21,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:21,295 INFO L93 Difference]: Finished difference Result 258 states and 322 transitions. [2022-11-16 12:08:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:08:21,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-11-16 12:08:21,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:21,301 INFO L225 Difference]: With dead ends: 258 [2022-11-16 12:08:21,301 INFO L226 Difference]: Without dead ends: 213 [2022-11-16 12:08:21,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:21,303 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 1 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 282 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 [2022-11-16 12:08:21,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 282 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:08:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-16 12:08:21,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2022-11-16 12:08:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 181 states have (on average 1.2209944751381216) internal successors, (221), 186 states have internal predecessors, (221), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (19), 18 states have call predecessors, (19), 17 states have call successors, (19) [2022-11-16 12:08:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 259 transitions. [2022-11-16 12:08:21,344 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 259 transitions. Word has length 51 [2022-11-16 12:08:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:21,345 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 259 transitions. [2022-11-16 12:08:21,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 259 transitions. [2022-11-16 12:08:21,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 12:08:21,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:21,346 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:21,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:21,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:21,555 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash 447980418, now seen corresponding path program 1 times [2022-11-16 12:08:21,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:21,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718951426] [2022-11-16 12:08:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:21,556 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 [2022-11-16 12:08:21,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:21,558 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:21,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (22)] Waiting until timeout for monitored process [2022-11-16 12:08:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:21,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:08:21,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:08:22,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:08:22,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:22,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718951426] [2022-11-16 12:08:22,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718951426] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:22,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:08:22,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-11-16 12:08:22,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992342938] [2022-11-16 12:08:22,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:22,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:08:22,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:08:22,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:08:22,649 INFO L87 Difference]: Start difference. First operand 207 states and 259 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:08:23,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:23,389 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2022-11-16 12:08:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:08:23,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-11-16 12:08:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:23,392 INFO L225 Difference]: With dead ends: 232 [2022-11-16 12:08:23,392 INFO L226 Difference]: Without dead ends: 201 [2022-11-16 12:08:23,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:08:23,393 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 78 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:23,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 566 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:08:23,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-16 12:08:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 185. [2022-11-16 12:08:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 159 states have (on average 1.2264150943396226) internal successors, (195), 165 states have internal predecessors, (195), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (19), 17 states have call predecessors, (19), 17 states have call successors, (19) [2022-11-16 12:08:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2022-11-16 12:08:23,438 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 51 [2022-11-16 12:08:23,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:23,439 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2022-11-16 12:08:23,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:08:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2022-11-16 12:08:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-16 12:08:23,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:23,440 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:23,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:23,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:23,653 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:23,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:23,654 INFO L85 PathProgramCache]: Analyzing trace with hash -826993692, now seen corresponding path program 1 times [2022-11-16 12:08:23,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:23,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387594068] [2022-11-16 12:08:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:23,655 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 [2022-11-16 12:08:23,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:23,656 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:23,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (23)] Waiting until timeout for monitored process [2022-11-16 12:08:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:23,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:08:23,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:08:24,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:24,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:24,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387594068] [2022-11-16 12:08:24,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387594068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:24,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:24,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:08:24,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240689381] [2022-11-16 12:08:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:24,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:08:24,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:08:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:08:24,039 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:25,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:25,239 INFO L93 Difference]: Finished difference Result 271 states and 349 transitions. [2022-11-16 12:08:25,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:08:25,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2022-11-16 12:08:25,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:25,243 INFO L225 Difference]: With dead ends: 271 [2022-11-16 12:08:25,244 INFO L226 Difference]: Without dead ends: 222 [2022-11-16 12:08:25,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:08:25,245 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 89 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:25,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 532 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:08:25,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-16 12:08:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 159. [2022-11-16 12:08:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 139 states have internal predecessors, (166), 20 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:08:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 204 transitions. [2022-11-16 12:08:25,275 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 204 transitions. Word has length 53 [2022-11-16 12:08:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:25,275 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 204 transitions. [2022-11-16 12:08:25,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:08:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 204 transitions. [2022-11-16 12:08:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 12:08:25,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:25,277 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:25,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:25,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:25,490 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:25,490 INFO L85 PathProgramCache]: Analyzing trace with hash 841846950, now seen corresponding path program 1 times [2022-11-16 12:08:25,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:25,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016947070] [2022-11-16 12:08:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:25,491 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 [2022-11-16 12:08:25,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:25,492 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:25,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (24)] Waiting until timeout for monitored process [2022-11-16 12:08:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:25,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:08:25,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:08:30,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:30,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:30,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016947070] [2022-11-16 12:08:30,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016947070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:30,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:30,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:08:30,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054601882] [2022-11-16 12:08:30,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:30,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:08:30,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:30,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:08:30,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:30,270 INFO L87 Difference]: Start difference. First operand 159 states and 204 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:30,462 INFO L93 Difference]: Finished difference Result 168 states and 215 transitions. [2022-11-16 12:08:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:08:30,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-11-16 12:08:30,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:30,464 INFO L225 Difference]: With dead ends: 168 [2022-11-16 12:08:30,464 INFO L226 Difference]: Without dead ends: 166 [2022-11-16 12:08:30,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:08:30,465 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 9 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:30,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 422 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-11-16 12:08:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-16 12:08:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-16 12:08:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 136 states have (on average 1.2426470588235294) internal successors, (169), 145 states have internal predecessors, (169), 23 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 16 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 12:08:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2022-11-16 12:08:30,497 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 55 [2022-11-16 12:08:30,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:30,498 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2022-11-16 12:08:30,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:30,498 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2022-11-16 12:08:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 12:08:30,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:30,500 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:30,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:30,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:30,713 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:30,713 INFO L85 PathProgramCache]: Analyzing trace with hash 12170841, now seen corresponding path program 1 times [2022-11-16 12:08:30,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:30,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134228522] [2022-11-16 12:08:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:30,713 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 [2022-11-16 12:08:30,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:30,714 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:30,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (25)] Waiting until timeout for monitored process [2022-11-16 12:08:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:30,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:08:30,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:08:37,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:37,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:37,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134228522] [2022-11-16 12:08:37,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134228522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:37,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:37,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:08:37,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452252267] [2022-11-16 12:08:37,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:37,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:08:37,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:37,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:08:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=37, Unknown=3, NotChecked=0, Total=56 [2022-11-16 12:08:37,876 INFO L87 Difference]: Start difference. First operand 166 states and 213 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:38,032 INFO L93 Difference]: Finished difference Result 213 states and 272 transitions. [2022-11-16 12:08:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:08:38,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-11-16 12:08:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:38,034 INFO L225 Difference]: With dead ends: 213 [2022-11-16 12:08:38,034 INFO L226 Difference]: Without dead ends: 211 [2022-11-16 12:08:38,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=20, Invalid=49, Unknown=3, NotChecked=0, Total=72 [2022-11-16 12:08:38,036 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 37 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:38,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 548 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 72 Unchecked, 0.1s Time] [2022-11-16 12:08:38,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-16 12:08:38,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 163. [2022-11-16 12:08:38,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 136 states have (on average 1.2426470588235294) internal successors, (169), 142 states have internal predecessors, (169), 20 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:08:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 207 transitions. [2022-11-16 12:08:38,071 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 207 transitions. Word has length 56 [2022-11-16 12:08:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:38,072 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 207 transitions. [2022-11-16 12:08:38,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 207 transitions. [2022-11-16 12:08:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 12:08:38,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:38,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:38,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (25)] Ended with exit code 0 [2022-11-16 12:08:38,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:38,286 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:38,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:38,287 INFO L85 PathProgramCache]: Analyzing trace with hash 590846065, now seen corresponding path program 1 times [2022-11-16 12:08:38,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:38,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711340080] [2022-11-16 12:08:38,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:38,288 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 [2022-11-16 12:08:38,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:38,288 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:38,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (26)] Waiting until timeout for monitored process [2022-11-16 12:08:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:38,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:08:38,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:08:40,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:40,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:40,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711340080] [2022-11-16 12:08:40,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711340080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:40,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:40,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:08:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647876018] [2022-11-16 12:08:40,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:40,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:08:40,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:40,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:08:40,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:08:40,158 INFO L87 Difference]: Start difference. First operand 163 states and 207 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:45,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:45,460 INFO L93 Difference]: Finished difference Result 238 states and 304 transitions. [2022-11-16 12:08:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:08:45,462 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2022-11-16 12:08:45,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:45,464 INFO L225 Difference]: With dead ends: 238 [2022-11-16 12:08:45,464 INFO L226 Difference]: Without dead ends: 226 [2022-11-16 12:08:45,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:08:45,465 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 165 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:45,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1081 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 12:08:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-16 12:08:45,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 163. [2022-11-16 12:08:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 136 states have (on average 1.2279411764705883) internal successors, (167), 142 states have internal predecessors, (167), 20 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:08:45,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 205 transitions. [2022-11-16 12:08:45,502 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 205 transitions. Word has length 59 [2022-11-16 12:08:45,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:45,502 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 205 transitions. [2022-11-16 12:08:45,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 205 transitions. [2022-11-16 12:08:45,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:08:45,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:45,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:45,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:45,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:45,717 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:45,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:45,717 INFO L85 PathProgramCache]: Analyzing trace with hash -407457257, now seen corresponding path program 1 times [2022-11-16 12:08:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:45,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767216503] [2022-11-16 12:08:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:45,718 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 [2022-11-16 12:08:45,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:45,719 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:45,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (27)] Waiting until timeout for monitored process [2022-11-16 12:08:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:45,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:08:45,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:08:45,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:45,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:45,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767216503] [2022-11-16 12:08:45,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767216503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:45,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:45,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:08:45,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696240924] [2022-11-16 12:08:45,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:45,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:08:45,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:45,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:08:45,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:08:45,997 INFO L87 Difference]: Start difference. First operand 163 states and 205 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:08:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:46,321 INFO L93 Difference]: Finished difference Result 182 states and 225 transitions. [2022-11-16 12:08:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:08:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-11-16 12:08:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:46,322 INFO L225 Difference]: With dead ends: 182 [2022-11-16 12:08:46,323 INFO L226 Difference]: Without dead ends: 180 [2022-11-16 12:08:46,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:46,323 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 40 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:46,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 504 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:08:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-16 12:08:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2022-11-16 12:08:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 139 states have (on average 1.223021582733813) internal successors, (170), 145 states have internal predecessors, (170), 20 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:08:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 208 transitions. [2022-11-16 12:08:46,358 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 208 transitions. Word has length 61 [2022-11-16 12:08:46,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:46,358 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 208 transitions. [2022-11-16 12:08:46,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:08:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 208 transitions. [2022-11-16 12:08:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:08:46,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:46,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:46,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:46,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:46,573 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:46,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:46,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1933907116, now seen corresponding path program 1 times [2022-11-16 12:08:46,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:46,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685914981] [2022-11-16 12:08:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:46,574 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 [2022-11-16 12:08:46,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:46,575 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:46,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (28)] Waiting until timeout for monitored process [2022-11-16 12:08:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:46,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:08:46,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:08:48,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:48,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:48,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685914981] [2022-11-16 12:08:48,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685914981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:48,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:48,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:08:48,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431316426] [2022-11-16 12:08:48,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:48,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:08:48,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:48,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:08:48,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:08:48,184 INFO L87 Difference]: Start difference. First operand 167 states and 208 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:54,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:54,364 INFO L93 Difference]: Finished difference Result 432 states and 559 transitions. [2022-11-16 12:08:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:08:54,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2022-11-16 12:08:54,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:54,367 INFO L225 Difference]: With dead ends: 432 [2022-11-16 12:08:54,367 INFO L226 Difference]: Without dead ends: 400 [2022-11-16 12:08:54,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:08:54,368 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 463 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:54,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1007 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 12:08:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-16 12:08:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 197. [2022-11-16 12:08:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 166 states have (on average 1.2048192771084338) internal successors, (200), 173 states have internal predecessors, (200), 23 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 12:08:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 244 transitions. [2022-11-16 12:08:54,424 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 244 transitions. Word has length 61 [2022-11-16 12:08:54,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:54,425 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 244 transitions. [2022-11-16 12:08:54,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:54,425 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 244 transitions. [2022-11-16 12:08:54,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:08:54,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:54,426 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:54,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:54,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:54,639 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash -131344237, now seen corresponding path program 1 times [2022-11-16 12:08:54,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:54,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389165685] [2022-11-16 12:08:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:54,640 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 [2022-11-16 12:08:54,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:54,641 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:54,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (29)] Waiting until timeout for monitored process [2022-11-16 12:08:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:54,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:08:54,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:08:54,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:54,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:54,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389165685] [2022-11-16 12:08:54,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389165685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:54,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:54,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:08:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080228261] [2022-11-16 12:08:54,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:54,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:08:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:54,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:08:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:08:54,902 INFO L87 Difference]: Start difference. First operand 197 states and 244 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:08:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:55,282 INFO L93 Difference]: Finished difference Result 219 states and 270 transitions. [2022-11-16 12:08:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:08:55,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-11-16 12:08:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:55,283 INFO L225 Difference]: With dead ends: 219 [2022-11-16 12:08:55,284 INFO L226 Difference]: Without dead ends: 217 [2022-11-16 12:08:55,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:08:55,285 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 34 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:55,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 500 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:08:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-16 12:08:55,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 202. [2022-11-16 12:08:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 169 states have (on average 1.2011834319526626) internal successors, (203), 177 states have internal predecessors, (203), 24 states have call successors, (24), 7 states have call predecessors, (24), 8 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 12:08:55,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 249 transitions. [2022-11-16 12:08:55,333 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 249 transitions. Word has length 61 [2022-11-16 12:08:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:55,334 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 249 transitions. [2022-11-16 12:08:55,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:08:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 249 transitions. [2022-11-16 12:08:55,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:08:55,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:55,335 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:55,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:55,549 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:55,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash -943451417, now seen corresponding path program 1 times [2022-11-16 12:08:55,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:55,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186172978] [2022-11-16 12:08:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:55,550 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 [2022-11-16 12:08:55,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:55,551 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:55,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (30)] Waiting until timeout for monitored process [2022-11-16 12:08:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:55,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:08:55,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:08:58,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:58,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:08:58,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186172978] [2022-11-16 12:08:58,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186172978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:58,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:58,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:08:58,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042073192] [2022-11-16 12:08:58,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:58,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:08:58,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:08:58,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:08:58,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:08:58,376 INFO L87 Difference]: Start difference. First operand 202 states and 249 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:08:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:59,394 INFO L93 Difference]: Finished difference Result 364 states and 461 transitions. [2022-11-16 12:08:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:08:59,395 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 66 [2022-11-16 12:08:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:59,397 INFO L225 Difference]: With dead ends: 364 [2022-11-16 12:08:59,397 INFO L226 Difference]: Without dead ends: 344 [2022-11-16 12:08:59,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:08:59,398 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 66 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 525 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:59,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1287 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 525 Unchecked, 0.3s Time] [2022-11-16 12:08:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-16 12:08:59,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 210. [2022-11-16 12:08:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 176 states have (on average 1.2045454545454546) internal successors, (212), 184 states have internal predecessors, (212), 25 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 12:08:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 260 transitions. [2022-11-16 12:08:59,460 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 260 transitions. Word has length 66 [2022-11-16 12:08:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:59,461 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 260 transitions. [2022-11-16 12:08:59,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:08:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 260 transitions. [2022-11-16 12:08:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:08:59,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:59,462 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:59,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:59,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:08:59,675 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:59,676 INFO L85 PathProgramCache]: Analyzing trace with hash 979776617, now seen corresponding path program 1 times [2022-11-16 12:08:59,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:08:59,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753008650] [2022-11-16 12:08:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:59,676 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 [2022-11-16 12:08:59,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:08:59,677 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:08:59,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (31)] Waiting until timeout for monitored process [2022-11-16 12:08:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:59,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:08:59,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:09:03,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:03,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:03,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753008650] [2022-11-16 12:09:03,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753008650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:03,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:03,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:09:03,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925684720] [2022-11-16 12:09:03,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:03,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:09:03,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:03,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:09:03,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2022-11-16 12:09:03,279 INFO L87 Difference]: Start difference. First operand 210 states and 260 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:09:05,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:05,600 INFO L93 Difference]: Finished difference Result 263 states and 325 transitions. [2022-11-16 12:09:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:09:05,604 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 66 [2022-11-16 12:09:05,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:05,605 INFO L225 Difference]: With dead ends: 263 [2022-11-16 12:09:05,605 INFO L226 Difference]: Without dead ends: 243 [2022-11-16 12:09:05,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=28, Invalid=80, Unknown=2, NotChecked=0, Total=110 [2022-11-16 12:09:05,606 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 7 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:05,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 581 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 150 Unchecked, 0.1s Time] [2022-11-16 12:09:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-16 12:09:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 209. [2022-11-16 12:09:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 175 states have (on average 1.2) internal successors, (210), 183 states have internal predecessors, (210), 25 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 12:09:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 258 transitions. [2022-11-16 12:09:05,663 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 258 transitions. Word has length 66 [2022-11-16 12:09:05,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:05,663 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 258 transitions. [2022-11-16 12:09:05,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:09:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 258 transitions. [2022-11-16 12:09:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:09:05,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:05,665 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:05,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:05,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:05,878 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:05,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1210749100, now seen corresponding path program 1 times [2022-11-16 12:09:05,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:05,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809957305] [2022-11-16 12:09:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:05,879 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 [2022-11-16 12:09:05,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:05,880 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:05,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (32)] Waiting until timeout for monitored process [2022-11-16 12:09:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:05,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:09:05,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 12:09:09,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:10,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:10,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809957305] [2022-11-16 12:09:10,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809957305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:10,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1835636267] [2022-11-16 12:09:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:10,003 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:09:10,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:09:10,004 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:09:10,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-16 12:09:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:10,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:09:10,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:09:11,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:11,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1835636267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:11,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:09:11,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 13 [2022-11-16 12:09:11,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838993617] [2022-11-16 12:09:11,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:11,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:09:11,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:09:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:09:11,846 INFO L87 Difference]: Start difference. First operand 209 states and 258 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:09:12,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:12,945 INFO L93 Difference]: Finished difference Result 346 states and 433 transitions. [2022-11-16 12:09:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:09:12,946 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 67 [2022-11-16 12:09:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:12,947 INFO L225 Difference]: With dead ends: 346 [2022-11-16 12:09:12,947 INFO L226 Difference]: Without dead ends: 326 [2022-11-16 12:09:12,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:09:12,949 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 62 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:12,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1028 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 280 Unchecked, 0.3s Time] [2022-11-16 12:09:12,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-16 12:09:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 211. [2022-11-16 12:09:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 177 states have (on average 1.2090395480225988) internal successors, (214), 185 states have internal predecessors, (214), 25 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 12:09:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 262 transitions. [2022-11-16 12:09:13,016 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 262 transitions. Word has length 67 [2022-11-16 12:09:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:13,016 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 262 transitions. [2022-11-16 12:09:13,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:09:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 262 transitions. [2022-11-16 12:09:13,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:09:13,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:13,018 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:13,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (32)] Ended with exit code 0 [2022-11-16 12:09:13,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:13,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:09:13,431 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1980026946, now seen corresponding path program 1 times [2022-11-16 12:09:13,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:13,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985889374] [2022-11-16 12:09:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:13,432 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 [2022-11-16 12:09:13,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:13,433 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:13,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (34)] Waiting until timeout for monitored process [2022-11-16 12:09:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:13,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:09:13,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:09:15,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:15,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:15,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985889374] [2022-11-16 12:09:15,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985889374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:15,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:15,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:09:15,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121242413] [2022-11-16 12:09:15,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:15,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:09:15,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:15,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:09:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:09:15,659 INFO L87 Difference]: Start difference. First operand 211 states and 262 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:09:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:21,316 INFO L93 Difference]: Finished difference Result 314 states and 391 transitions. [2022-11-16 12:09:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:09:21,317 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 67 [2022-11-16 12:09:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:21,319 INFO L225 Difference]: With dead ends: 314 [2022-11-16 12:09:21,319 INFO L226 Difference]: Without dead ends: 306 [2022-11-16 12:09:21,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:09:21,320 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 127 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:21,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 919 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 12:09:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-11-16 12:09:21,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 212. [2022-11-16 12:09:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 178 states have (on average 1.202247191011236) internal successors, (214), 186 states have internal predecessors, (214), 25 states have call successors, (25), 7 states have call predecessors, (25), 8 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 12:09:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 262 transitions. [2022-11-16 12:09:21,393 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 262 transitions. Word has length 67 [2022-11-16 12:09:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:21,394 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 262 transitions. [2022-11-16 12:09:21,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:09:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 262 transitions. [2022-11-16 12:09:21,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:09:21,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:21,396 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:21,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:21,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:21,609 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:21,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:21,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1720222190, now seen corresponding path program 1 times [2022-11-16 12:09:21,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:21,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345020091] [2022-11-16 12:09:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:21,609 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 [2022-11-16 12:09:21,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:21,610 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:21,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (35)] Waiting until timeout for monitored process [2022-11-16 12:09:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:21,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:09:21,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:09:22,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:22,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:22,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345020091] [2022-11-16 12:09:22,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345020091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:22,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:22,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:09:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679851551] [2022-11-16 12:09:22,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:22,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:09:22,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:22,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:09:22,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:09:22,390 INFO L87 Difference]: Start difference. First operand 212 states and 262 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:09:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:23,348 INFO L93 Difference]: Finished difference Result 339 states and 421 transitions. [2022-11-16 12:09:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:09:23,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 67 [2022-11-16 12:09:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:23,350 INFO L225 Difference]: With dead ends: 339 [2022-11-16 12:09:23,350 INFO L226 Difference]: Without dead ends: 319 [2022-11-16 12:09:23,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:09:23,351 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 78 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:23,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 739 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 89 Invalid, 0 Unknown, 128 Unchecked, 0.6s Time] [2022-11-16 12:09:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-16 12:09:23,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 202. [2022-11-16 12:09:23,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 170 states have (on average 1.188235294117647) internal successors, (202), 177 states have internal predecessors, (202), 23 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 12:09:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 246 transitions. [2022-11-16 12:09:23,413 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 246 transitions. Word has length 67 [2022-11-16 12:09:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:23,413 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 246 transitions. [2022-11-16 12:09:23,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:09:23,413 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 246 transitions. [2022-11-16 12:09:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:09:23,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:23,415 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:23,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:23,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:23,627 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:23,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:23,628 INFO L85 PathProgramCache]: Analyzing trace with hash -7943642, now seen corresponding path program 1 times [2022-11-16 12:09:23,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:23,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387170134] [2022-11-16 12:09:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:23,628 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 [2022-11-16 12:09:23,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:23,629 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:23,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (36)] Waiting until timeout for monitored process [2022-11-16 12:09:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:23,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:09:23,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:09:23,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:23,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:23,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387170134] [2022-11-16 12:09:23,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387170134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:23,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:23,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:09:23,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031731755] [2022-11-16 12:09:23,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:23,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:09:23,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:23,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:09:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:09:23,961 INFO L87 Difference]: Start difference. First operand 202 states and 246 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 12:09:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:24,305 INFO L93 Difference]: Finished difference Result 237 states and 285 transitions. [2022-11-16 12:09:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:09:24,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2022-11-16 12:09:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:24,306 INFO L225 Difference]: With dead ends: 237 [2022-11-16 12:09:24,307 INFO L226 Difference]: Without dead ends: 223 [2022-11-16 12:09:24,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:09:24,307 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 30 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:24,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 486 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:09:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-16 12:09:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 198. [2022-11-16 12:09:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 164 states have (on average 1.1829268292682926) internal successors, (194), 174 states have internal predecessors, (194), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (22), 17 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 12:09:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 240 transitions. [2022-11-16 12:09:24,377 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 240 transitions. Word has length 69 [2022-11-16 12:09:24,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:24,378 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 240 transitions. [2022-11-16 12:09:24,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 12:09:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 240 transitions. [2022-11-16 12:09:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:09:24,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:24,379 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:24,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (36)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:24,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:24,592 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:24,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:24,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1053686940, now seen corresponding path program 1 times [2022-11-16 12:09:24,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:24,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092833274] [2022-11-16 12:09:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:24,593 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 [2022-11-16 12:09:24,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:24,594 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:24,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (37)] Waiting until timeout for monitored process [2022-11-16 12:09:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:24,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:09:24,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:09:24,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:24,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:24,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092833274] [2022-11-16 12:09:24,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092833274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:24,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:24,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:09:24,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121297851] [2022-11-16 12:09:24,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:24,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:09:24,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:24,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:09:24,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:09:24,862 INFO L87 Difference]: Start difference. First operand 198 states and 240 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 12:09:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:25,211 INFO L93 Difference]: Finished difference Result 227 states and 272 transitions. [2022-11-16 12:09:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:09:25,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2022-11-16 12:09:25,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:25,213 INFO L225 Difference]: With dead ends: 227 [2022-11-16 12:09:25,213 INFO L226 Difference]: Without dead ends: 213 [2022-11-16 12:09:25,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:09:25,214 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 30 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:25,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 486 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:09:25,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-16 12:09:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 168. [2022-11-16 12:09:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 141 states have (on average 1.198581560283688) internal successors, (169), 147 states have internal predecessors, (169), 18 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 12:09:25,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 204 transitions. [2022-11-16 12:09:25,256 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 204 transitions. Word has length 69 [2022-11-16 12:09:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:25,257 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 204 transitions. [2022-11-16 12:09:25,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 12:09:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 204 transitions. [2022-11-16 12:09:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:09:25,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:25,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:25,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:25,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:25,472 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:25,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:25,473 INFO L85 PathProgramCache]: Analyzing trace with hash -954827573, now seen corresponding path program 1 times [2022-11-16 12:09:25,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:25,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752178778] [2022-11-16 12:09:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:25,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:09:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:25,474 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:25,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (38)] Waiting until timeout for monitored process [2022-11-16 12:09:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:25,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:09:25,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:09:26,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:28,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:28,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752178778] [2022-11-16 12:09:28,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752178778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:28,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [688363199] [2022-11-16 12:09:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:28,114 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:09:28,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:09:28,115 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:09:28,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-16 12:09:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:28,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:09:28,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:09:28,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:09:28,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [688363199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:28,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:28,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 12 [2022-11-16 12:09:28,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789440872] [2022-11-16 12:09:28,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:28,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:09:28,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:28,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:09:28,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:09:28,894 INFO L87 Difference]: Start difference. First operand 168 states and 204 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:30,197 INFO L93 Difference]: Finished difference Result 196 states and 230 transitions. [2022-11-16 12:09:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:09:30,197 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 68 [2022-11-16 12:09:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:30,199 INFO L225 Difference]: With dead ends: 196 [2022-11-16 12:09:30,199 INFO L226 Difference]: Without dead ends: 143 [2022-11-16 12:09:30,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 220 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:09:30,200 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 53 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:30,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 826 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 62 Unchecked, 0.7s Time] [2022-11-16 12:09:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-16 12:09:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-11-16 12:09:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 118 states have (on average 1.194915254237288) internal successors, (141), 124 states have internal predecessors, (141), 16 states have call successors, (16), 7 states have call predecessors, (16), 8 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:09:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 172 transitions. [2022-11-16 12:09:30,233 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 172 transitions. Word has length 68 [2022-11-16 12:09:30,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:30,233 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 172 transitions. [2022-11-16 12:09:30,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 172 transitions. [2022-11-16 12:09:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 12:09:30,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:30,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:30,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:30,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (38)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:30,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:30,637 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:30,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:30,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1492423721, now seen corresponding path program 1 times [2022-11-16 12:09:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:30,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738123531] [2022-11-16 12:09:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:30,638 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 [2022-11-16 12:09:30,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:30,639 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:30,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (40)] Waiting until timeout for monitored process [2022-11-16 12:09:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:30,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:09:30,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:09:30,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:30,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:30,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738123531] [2022-11-16 12:09:30,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738123531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:30,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:30,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:09:30,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510334971] [2022-11-16 12:09:30,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:30,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:30,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:30,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:30,925 INFO L87 Difference]: Start difference. First operand 143 states and 172 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:09:31,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:31,100 INFO L93 Difference]: Finished difference Result 171 states and 201 transitions. [2022-11-16 12:09:31,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:09:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2022-11-16 12:09:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:31,101 INFO L225 Difference]: With dead ends: 171 [2022-11-16 12:09:31,102 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 12:09:31,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:09:31,103 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 43 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:31,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 236 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:09:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 12:09:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 108. [2022-11-16 12:09:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 94 states have internal predecessors, (106), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:09:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2022-11-16 12:09:31,134 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 70 [2022-11-16 12:09:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:31,134 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2022-11-16 12:09:31,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:09:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2022-11-16 12:09:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 12:09:31,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:31,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:31,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (40)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:31,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:31,348 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:31,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:31,349 INFO L85 PathProgramCache]: Analyzing trace with hash -751559577, now seen corresponding path program 1 times [2022-11-16 12:09:31,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:31,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833793156] [2022-11-16 12:09:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:31,349 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 [2022-11-16 12:09:31,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:31,350 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:31,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (41)] Waiting until timeout for monitored process [2022-11-16 12:09:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:31,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:09:31,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:09:32,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:33,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833793156] [2022-11-16 12:09:33,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833793156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1763247052] [2022-11-16 12:09:33,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:33,175 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:09:33,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:09:33,176 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:09:33,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2022-11-16 12:09:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:33,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:09:33,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:09:33,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:33,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1763247052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:33,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:09:33,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-11-16 12:09:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264488685] [2022-11-16 12:09:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:09:33,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:09:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:09:33,838 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:09:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:34,687 INFO L93 Difference]: Finished difference Result 176 states and 200 transitions. [2022-11-16 12:09:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:09:34,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2022-11-16 12:09:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:34,689 INFO L225 Difference]: With dead ends: 176 [2022-11-16 12:09:34,689 INFO L226 Difference]: Without dead ends: 128 [2022-11-16 12:09:34,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:09:34,690 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 138 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:34,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 235 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:09:34,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-16 12:09:34,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 108. [2022-11-16 12:09:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 92 states have (on average 1.141304347826087) internal successors, (105), 94 states have internal predecessors, (105), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:09:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2022-11-16 12:09:34,723 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 70 [2022-11-16 12:09:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:34,723 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2022-11-16 12:09:34,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:09:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2022-11-16 12:09:34,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 12:09:34,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:34,724 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:34,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:34,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (41)] Ended with exit code 0 [2022-11-16 12:09:35,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:35,127 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:35,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:35,127 INFO L85 PathProgramCache]: Analyzing trace with hash -49959703, now seen corresponding path program 1 times [2022-11-16 12:09:35,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:35,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101054789] [2022-11-16 12:09:35,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:35,128 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 [2022-11-16 12:09:35,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:35,129 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:35,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (43)] Waiting until timeout for monitored process [2022-11-16 12:09:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:35,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:09:35,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:09:36,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:37,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:37,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101054789] [2022-11-16 12:09:37,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101054789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:37,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [246732753] [2022-11-16 12:09:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:37,338 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:09:37,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:09:37,341 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:09:37,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2022-11-16 12:09:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:37,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:09:37,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:09:37,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:09:38,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [246732753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:38,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:38,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 11 [2022-11-16 12:09:38,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221631255] [2022-11-16 12:09:38,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:38,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:09:38,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:38,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:09:38,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:09:38,034 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:38,702 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2022-11-16 12:09:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:09:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 70 [2022-11-16 12:09:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:38,704 INFO L225 Difference]: With dead ends: 120 [2022-11-16 12:09:38,704 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 12:09:38,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:09:38,705 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 28 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:38,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 567 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 44 Unchecked, 0.3s Time] [2022-11-16 12:09:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 12:09:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-16 12:09:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 57 states have internal predecessors, (64), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:09:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2022-11-16 12:09:38,720 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 70 [2022-11-16 12:09:38,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:38,721 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2022-11-16 12:09:38,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:38,721 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2022-11-16 12:09:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 12:09:38,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:38,722 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:38,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:38,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (43)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:39,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:39,133 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:39,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:39,134 INFO L85 PathProgramCache]: Analyzing trace with hash -437028168, now seen corresponding path program 1 times [2022-11-16 12:09:39,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:39,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577110859] [2022-11-16 12:09:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:39,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:09:39,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:39,135 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:39,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (45)] Waiting until timeout for monitored process [2022-11-16 12:09:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:39,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:09:39,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 12:09:40,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:40,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:40,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577110859] [2022-11-16 12:09:40,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577110859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:40,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:40,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:09:40,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036772346] [2022-11-16 12:09:40,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:40,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:09:40,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:40,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:09:40,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:09:40,979 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:41,270 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2022-11-16 12:09:41,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:09:41,270 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74 [2022-11-16 12:09:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:41,271 INFO L225 Difference]: With dead ends: 105 [2022-11-16 12:09:41,271 INFO L226 Difference]: Without dead ends: 97 [2022-11-16 12:09:41,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:09:41,272 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 22 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:41,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 474 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 137 Unchecked, 0.1s Time] [2022-11-16 12:09:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-16 12:09:41,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2022-11-16 12:09:41,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 70 states have internal predecessors, (78), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:09:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2022-11-16 12:09:41,299 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 74 [2022-11-16 12:09:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:41,299 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2022-11-16 12:09:41,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2022-11-16 12:09:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 12:09:41,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:41,301 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:41,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (45)] Ended with exit code 0 [2022-11-16 12:09:41,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:41,513 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:41,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:41,514 INFO L85 PathProgramCache]: Analyzing trace with hash -178862730, now seen corresponding path program 1 times [2022-11-16 12:09:41,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:41,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762920088] [2022-11-16 12:09:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:41,514 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 [2022-11-16 12:09:41,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:41,515 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:41,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (46)] Waiting until timeout for monitored process [2022-11-16 12:09:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:41,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:09:41,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 12:09:45,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:45,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:45,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762920088] [2022-11-16 12:09:45,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762920088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:45,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:45,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:09:45,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342098076] [2022-11-16 12:09:45,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:45,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:09:45,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:45,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:09:45,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:09:45,026 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:45,365 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2022-11-16 12:09:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:09:45,365 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74 [2022-11-16 12:09:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:45,366 INFO L225 Difference]: With dead ends: 109 [2022-11-16 12:09:45,366 INFO L226 Difference]: Without dead ends: 89 [2022-11-16 12:09:45,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:09:45,367 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 20 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:45,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 683 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 226 Unchecked, 0.2s Time] [2022-11-16 12:09:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-16 12:09:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2022-11-16 12:09:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 63 states have internal predecessors, (70), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:09:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-11-16 12:09:45,380 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 74 [2022-11-16 12:09:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:45,380 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-11-16 12:09:45,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-11-16 12:09:45,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 12:09:45,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:45,381 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:45,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (46)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:45,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:45,582 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1281033670, now seen corresponding path program 1 times [2022-11-16 12:09:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310894471] [2022-11-16 12:09:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:45,583 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 [2022-11-16 12:09:45,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:45,584 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:45,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (47)] Waiting until timeout for monitored process [2022-11-16 12:09:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:45,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:09:45,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 12:09:48,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:48,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:48,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310894471] [2022-11-16 12:09:48,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310894471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:48,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:48,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:09:48,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577998566] [2022-11-16 12:09:48,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:48,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:09:48,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:09:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:09:48,701 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:54,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:54,641 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2022-11-16 12:09:54,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:09:54,642 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74 [2022-11-16 12:09:54,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:54,643 INFO L225 Difference]: With dead ends: 108 [2022-11-16 12:09:54,643 INFO L226 Difference]: Without dead ends: 89 [2022-11-16 12:09:54,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:09:54,644 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 83 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:54,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 604 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 349 Invalid, 0 Unknown, 46 Unchecked, 2.7s Time] [2022-11-16 12:09:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-16 12:09:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2022-11-16 12:09:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.125) internal successors, (63), 57 states have internal predecessors, (63), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:09:54,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2022-11-16 12:09:54,663 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 74 [2022-11-16 12:09:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:54,664 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2022-11-16 12:09:54,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:54,664 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2022-11-16 12:09:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 12:09:54,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:54,665 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:54,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (47)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:54,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:54,878 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash -301196763, now seen corresponding path program 1 times [2022-11-16 12:09:54,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:54,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041129324] [2022-11-16 12:09:54,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:54,879 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 [2022-11-16 12:09:54,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:54,880 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:54,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (48)] Waiting until timeout for monitored process [2022-11-16 12:09:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:54,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:09:54,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 12:09:56,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:56,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:09:56,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041129324] [2022-11-16 12:09:56,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041129324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:56,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:56,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:09:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516766230] [2022-11-16 12:09:56,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:56,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:09:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:09:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:09:56,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:09:56,903 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:58,754 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2022-11-16 12:09:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:09:58,755 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 75 [2022-11-16 12:09:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:58,756 INFO L225 Difference]: With dead ends: 97 [2022-11-16 12:09:58,756 INFO L226 Difference]: Without dead ends: 89 [2022-11-16 12:09:58,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:09:58,757 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 36 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:58,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 599 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 124 Unchecked, 1.0s Time] [2022-11-16 12:09:58,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-16 12:09:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2022-11-16 12:09:58,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 70 states have (on average 1.1) internal successors, (77), 71 states have internal predecessors, (77), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:09:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2022-11-16 12:09:58,780 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 75 [2022-11-16 12:09:58,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:58,781 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2022-11-16 12:09:58,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:09:58,781 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2022-11-16 12:09:58,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 12:09:58,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:58,782 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:58,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (48)] Ended with exit code 0 [2022-11-16 12:09:58,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:09:58,994 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:58,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash -43031325, now seen corresponding path program 1 times [2022-11-16 12:09:58,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:09:58,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780707335] [2022-11-16 12:09:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:58,995 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 [2022-11-16 12:09:58,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:09:58,996 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:09:58,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (49)] Waiting until timeout for monitored process [2022-11-16 12:09:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:59,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:09:59,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 12:10:01,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:01,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:10:01,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780707335] [2022-11-16 12:10:01,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780707335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:01,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:01,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:10:01,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840683905] [2022-11-16 12:10:01,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:01,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:10:01,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:10:01,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:10:01,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:10:01,219 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:10:01,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:01,515 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2022-11-16 12:10:01,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:10:01,515 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 75 [2022-11-16 12:10:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:01,516 INFO L225 Difference]: With dead ends: 97 [2022-11-16 12:10:01,516 INFO L226 Difference]: Without dead ends: 69 [2022-11-16 12:10:01,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:10:01,517 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 19 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:01,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 644 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 209 Unchecked, 0.1s Time] [2022-11-16 12:10:01,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-16 12:10:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-16 12:10:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 57 states have internal predecessors, (62), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:10:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-11-16 12:10:01,528 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 75 [2022-11-16 12:10:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:01,528 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-11-16 12:10:01,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:10:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-11-16 12:10:01,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 12:10:01,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:01,529 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:01,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (49)] Ended with exit code 0 [2022-11-16 12:10:01,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:10:01,739 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:01,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:01,740 INFO L85 PathProgramCache]: Analyzing trace with hash -695563549, now seen corresponding path program 1 times [2022-11-16 12:10:01,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:10:01,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707506284] [2022-11-16 12:10:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:01,740 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 [2022-11-16 12:10:01,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:10:01,741 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:10:01,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b762046-f8cf-4776-90bb-a14203f7a45b/bin/uautomizer-tPACEb0tL8/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 (50)] Waiting until timeout for monitored process [2022-11-16 12:10:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:01,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:10:01,820 INFO L286 TraceCheckSpWp]: Computing forward predicates...