./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 c2bc72e0ba847f7c079e01dc4ce9f95afa555e9d2ef7b4bcdf5e1274db86053e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 05:09:23,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 05:09:23,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 05:09:23,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 05:09:23,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 05:09:23,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 05:09:23,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 05:09:23,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 05:09:23,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 05:09:23,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 05:09:23,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 05:09:23,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 05:09:23,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 05:09:23,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 05:09:23,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 05:09:23,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 05:09:23,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 05:09:23,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 05:09:23,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 05:09:23,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 05:09:23,913 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 05:09:23,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 05:09:23,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 05:09:23,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 05:09:23,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 05:09:23,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 05:09:23,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 05:09:23,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 05:09:23,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 05:09:23,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 05:09:23,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 05:09:23,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 05:09:23,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 05:09:23,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 05:09:23,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 05:09:23,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 05:09:23,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 05:09:23,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 05:09:23,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 05:09:23,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 05:09:23,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 05:09:23,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 05:09:23,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-14 05:09:23,957 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 05:09:23,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 05:09:23,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 05:09:23,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 05:09:23,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 05:09:23,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 05:09:23,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 05:09:23,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 05:09:23,960 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 05:09:23,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 05:09:23,961 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 05:09:23,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 05:09:23,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 05:09:23,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 05:09:23,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 05:09:23,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 05:09:23,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 05:09:23,962 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 05:09:23,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 05:09:23,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 05:09:23,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 05:09:23,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 05:09:23,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 05:09:23,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 05:09:23,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 05:09:23,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 05:09:23,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 05:09:23,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 05:09:23,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 05:09:23,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 05:09:23,964 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 05:09:23,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 05:09:23,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 05:09:23,964 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bc72e0ba847f7c079e01dc4ce9f95afa555e9d2ef7b4bcdf5e1274db86053e [2022-07-14 05:09:24,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 05:09:24,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 05:09:24,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 05:09:24,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 05:09:24,248 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 05:09:24,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i [2022-07-14 05:09:24,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f7d8b95f/366e5b7468134aa5b2e226bae6f8277d/FLAGe3ddad848 [2022-07-14 05:09:24,838 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 05:09:24,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i [2022-07-14 05:09:24,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f7d8b95f/366e5b7468134aa5b2e226bae6f8277d/FLAGe3ddad848 [2022-07-14 05:09:25,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f7d8b95f/366e5b7468134aa5b2e226bae6f8277d [2022-07-14 05:09:25,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 05:09:25,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 05:09:25,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 05:09:25,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 05:09:25,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 05:09:25,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e1b63e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25, skipping insertion in model container [2022-07-14 05:09:25,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 05:09:25,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 05:09:25,471 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[37019,37032] [2022-07-14 05:09:25,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[47352,47365] [2022-07-14 05:09:25,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 05:09:25,556 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 05:09:25,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[37019,37032] [2022-07-14 05:09:25,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[47352,47365] [2022-07-14 05:09:25,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 05:09:25,682 INFO L208 MainTranslator]: Completed translation [2022-07-14 05:09:25,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25 WrapperNode [2022-07-14 05:09:25,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 05:09:25,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 05:09:25,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 05:09:25,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 05:09:25,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,775 INFO L137 Inliner]: procedures = 208, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 884 [2022-07-14 05:09:25,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 05:09:25,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 05:09:25,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 05:09:25,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 05:09:25,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 05:09:25,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 05:09:25,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 05:09:25,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 05:09:25,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (1/1) ... [2022-07-14 05:09:25,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 05:09:25,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:09:25,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 05:09:25,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 05:09:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 05:09:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 05:09:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 05:09:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-14 05:09:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 05:09:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 05:09:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 05:09:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-14 05:09:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-14 05:09:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 05:09:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 05:09:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 05:09:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 05:09:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 05:09:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 05:09:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 05:09:26,122 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 05:09:26,123 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 05:09:26,898 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 05:09:26,907 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 05:09:26,907 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2022-07-14 05:09:26,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 05:09:26 BoogieIcfgContainer [2022-07-14 05:09:26,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 05:09:26,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 05:09:26,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 05:09:26,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 05:09:26,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 05:09:25" (1/3) ... [2022-07-14 05:09:26,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc2dcf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 05:09:26, skipping insertion in model container [2022-07-14 05:09:26,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:09:25" (2/3) ... [2022-07-14 05:09:26,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc2dcf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 05:09:26, skipping insertion in model container [2022-07-14 05:09:26,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 05:09:26" (3/3) ... [2022-07-14 05:09:26,916 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test2-1.i [2022-07-14 05:09:26,930 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 05:09:26,931 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-14 05:09:26,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 05:09:26,988 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cb68b1c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d1d00ec [2022-07-14 05:09:26,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-14 05:09:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 164 states have (on average 1.6890243902439024) internal successors, (277), 171 states have internal predecessors, (277), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 05:09:26,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 05:09:26,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:09:26,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:09:26,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:09:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:09:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash -858859523, now seen corresponding path program 1 times [2022-07-14 05:09:27,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:09:27,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831336329] [2022-07-14 05:09:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:27,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:09:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:09:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:09:27,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:09:27,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831336329] [2022-07-14 05:09:27,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831336329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:09:27,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:09:27,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 05:09:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462761388] [2022-07-14 05:09:27,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:09:27,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 05:09:27,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:09:27,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 05:09:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 05:09:27,178 INFO L87 Difference]: Start difference. First operand has 177 states, 164 states have (on average 1.6890243902439024) internal successors, (277), 171 states have internal predecessors, (277), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-14 05:09:27,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:09:27,232 INFO L93 Difference]: Finished difference Result 352 states and 589 transitions. [2022-07-14 05:09:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 05:09:27,234 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-07-14 05:09:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:09:27,246 INFO L225 Difference]: With dead ends: 352 [2022-07-14 05:09:27,246 INFO L226 Difference]: Without dead ends: 173 [2022-07-14 05:09:27,250 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 [2022-07-14 05:09:27,256 INFO L413 NwaCegarLoop]: 233 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, 233 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 [2022-07-14 05:09:27,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:09:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-14 05:09:27,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-14 05:09:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 167 states have internal predecessors, (213), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 05:09:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2022-07-14 05:09:27,305 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 9 [2022-07-14 05:09:27,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:09:27,305 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2022-07-14 05:09:27,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-14 05:09:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2022-07-14 05:09:27,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-14 05:09:27,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:09:27,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:09:27,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 05:09:27,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:09:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:09:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash -294026559, now seen corresponding path program 1 times [2022-07-14 05:09:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:09:27,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118876683] [2022-07-14 05:09:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:27,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:09:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:09:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:09:27,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:09:27,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118876683] [2022-07-14 05:09:27,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118876683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:09:27,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:09:27,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 05:09:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282703977] [2022-07-14 05:09:27,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:09:27,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 05:09:27,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:09:27,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 05:09:27,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 05:09:27,401 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-07-14 05:09:27,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:09:27,655 INFO L93 Difference]: Finished difference Result 363 states and 489 transitions. [2022-07-14 05:09:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:09:27,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2022-07-14 05:09:27,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:09:27,657 INFO L225 Difference]: With dead ends: 363 [2022-07-14 05:09:27,657 INFO L226 Difference]: Without dead ends: 284 [2022-07-14 05:09:27,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:09:27,658 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 138 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 05:09:27,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 548 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 05:09:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-07-14 05:09:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 175. [2022-07-14 05:09:27,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 163 states have (on average 1.3190184049079754) internal successors, (215), 169 states have internal predecessors, (215), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 05:09:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 231 transitions. [2022-07-14 05:09:27,678 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 231 transitions. Word has length 44 [2022-07-14 05:09:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:09:27,678 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 231 transitions. [2022-07-14 05:09:27,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2022-07-14 05:09:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 231 transitions. [2022-07-14 05:09:27,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-14 05:09:27,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:09:27,683 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:09:27,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 05:09:27,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:09:27,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:09:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1509402797, now seen corresponding path program 1 times [2022-07-14 05:09:27,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:09:27,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224162660] [2022-07-14 05:09:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:27,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:09:27,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:09:27,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913733936] [2022-07-14 05:09:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:27,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:27,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:09:27,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:09:27,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 05:09:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:09:28,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 05:09:28,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:09:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:09:28,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:09:28,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:09:28,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224162660] [2022-07-14 05:09:28,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:09:28,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913733936] [2022-07-14 05:09:28,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913733936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:09:28,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:09:28,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 05:09:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61688388] [2022-07-14 05:09:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:09:28,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 05:09:28,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:09:28,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 05:09:28,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:09:28,343 INFO L87 Difference]: Start difference. First operand 175 states and 231 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-07-14 05:09:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:09:28,394 INFO L93 Difference]: Finished difference Result 367 states and 489 transitions. [2022-07-14 05:09:28,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 05:09:28,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2022-07-14 05:09:28,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:09:28,396 INFO L225 Difference]: With dead ends: 367 [2022-07-14 05:09:28,396 INFO L226 Difference]: Without dead ends: 196 [2022-07-14 05:09:28,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:09:28,399 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 9 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:09:28,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 403 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:09:28,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-14 05:09:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2022-07-14 05:09:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 183 states have (on average 1.284153005464481) internal successors, (235), 189 states have internal predecessors, (235), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 05:09:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 251 transitions. [2022-07-14 05:09:28,418 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 251 transitions. Word has length 96 [2022-07-14 05:09:28,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:09:28,419 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 251 transitions. [2022-07-14 05:09:28,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-07-14 05:09:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 251 transitions. [2022-07-14 05:09:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-14 05:09:28,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:09:28,421 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:09:28,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 05:09:28,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:28,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:09:28,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:09:28,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1482337195, now seen corresponding path program 1 times [2022-07-14 05:09:28,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:09:28,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165926156] [2022-07-14 05:09:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:09:28,715 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:09:28,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480833848] [2022-07-14 05:09:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:28,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:28,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:09:28,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:09:28,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 05:09:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:09:29,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 05:09:29,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:09:29,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 05:09:29,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:09:29,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:09:29,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165926156] [2022-07-14 05:09:29,377 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:09:29,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480833848] [2022-07-14 05:09:29,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480833848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:09:29,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:09:29,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 05:09:29,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794920016] [2022-07-14 05:09:29,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:09:29,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 05:09:29,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:09:29,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 05:09:29,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:09:29,379 INFO L87 Difference]: Start difference. First operand 195 states and 251 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-07-14 05:09:29,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:09:29,422 INFO L93 Difference]: Finished difference Result 294 states and 388 transitions. [2022-07-14 05:09:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 05:09:29,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 96 [2022-07-14 05:09:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:09:29,424 INFO L225 Difference]: With dead ends: 294 [2022-07-14 05:09:29,424 INFO L226 Difference]: Without dead ends: 216 [2022-07-14 05:09:29,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:09:29,425 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 8 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:09:29,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 405 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:09:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-14 05:09:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2022-07-14 05:09:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 203 states have (on average 1.2561576354679802) internal successors, (255), 209 states have internal predecessors, (255), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 05:09:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 271 transitions. [2022-07-14 05:09:29,445 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 271 transitions. Word has length 96 [2022-07-14 05:09:29,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:09:29,446 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 271 transitions. [2022-07-14 05:09:29,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-07-14 05:09:29,446 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 271 transitions. [2022-07-14 05:09:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-14 05:09:29,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:09:29,448 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:09:29,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 05:09:29,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-14 05:09:29,671 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:09:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:09:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1801512851, now seen corresponding path program 1 times [2022-07-14 05:09:29,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:09:29,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478306310] [2022-07-14 05:09:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:29,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:09:29,746 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:09:29,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686106488] [2022-07-14 05:09:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:29,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:29,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:09:29,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:09:29,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 05:09:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:09:30,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 05:09:30,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:09:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:09:30,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:09:30,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:09:30,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478306310] [2022-07-14 05:09:30,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:09:30,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686106488] [2022-07-14 05:09:30,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686106488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:09:30,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:09:30,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 05:09:30,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944627939] [2022-07-14 05:09:30,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:09:30,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 05:09:30,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:09:30,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 05:09:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 05:09:30,328 INFO L87 Difference]: Start difference. First operand 215 states and 271 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2022-07-14 05:09:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:09:30,382 INFO L93 Difference]: Finished difference Result 418 states and 530 transitions. [2022-07-14 05:09:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:09:30,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 96 [2022-07-14 05:09:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:09:30,384 INFO L225 Difference]: With dead ends: 418 [2022-07-14 05:09:30,384 INFO L226 Difference]: Without dead ends: 207 [2022-07-14 05:09:30,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:09:30,386 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 192 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:09:30,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 431 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:09:30,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-14 05:09:30,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2022-07-14 05:09:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 195 states have internal predecessors, (234), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 05:09:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 250 transitions. [2022-07-14 05:09:30,394 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 250 transitions. Word has length 96 [2022-07-14 05:09:30,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:09:30,394 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 250 transitions. [2022-07-14 05:09:30,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2022-07-14 05:09:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 250 transitions. [2022-07-14 05:09:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-14 05:09:30,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:09:30,396 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:09:30,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 05:09:30,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:30,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:09:30,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:09:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash 432355323, now seen corresponding path program 1 times [2022-07-14 05:09:30,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:09:30,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201069240] [2022-07-14 05:09:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:30,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:09:30,686 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:09:30,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252532978] [2022-07-14 05:09:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:30,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:30,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:09:30,689 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:09:30,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 05:09:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:09:31,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 05:09:31,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:09:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 05:09:31,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:09:31,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:09:31,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201069240] [2022-07-14 05:09:31,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:09:31,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252532978] [2022-07-14 05:09:31,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252532978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:09:31,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:09:31,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 05:09:31,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141476909] [2022-07-14 05:09:31,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:09:31,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 05:09:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:09:31,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 05:09:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:09:31,365 INFO L87 Difference]: Start difference. First operand 201 states and 250 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2022-07-14 05:09:31,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:09:31,416 INFO L93 Difference]: Finished difference Result 291 states and 368 transitions. [2022-07-14 05:09:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:09:31,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 96 [2022-07-14 05:09:31,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:09:31,418 INFO L225 Difference]: With dead ends: 291 [2022-07-14 05:09:31,418 INFO L226 Difference]: Without dead ends: 193 [2022-07-14 05:09:31,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:09:31,419 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 76 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:09:31,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 518 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:09:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-14 05:09:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2022-07-14 05:09:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 175 states have (on average 1.217142857142857) internal successors, (213), 181 states have internal predecessors, (213), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 05:09:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 229 transitions. [2022-07-14 05:09:31,424 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 229 transitions. Word has length 96 [2022-07-14 05:09:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:09:31,424 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 229 transitions. [2022-07-14 05:09:31,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2022-07-14 05:09:31,425 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 229 transitions. [2022-07-14 05:09:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-14 05:09:31,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:09:31,426 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:09:31,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 05:09:31,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:31,635 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:09:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:09:31,636 INFO L85 PathProgramCache]: Analyzing trace with hash -725253137, now seen corresponding path program 1 times [2022-07-14 05:09:31,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:09:31,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979622532] [2022-07-14 05:09:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:31,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:09:31,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:09:31,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208341475] [2022-07-14 05:09:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:31,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:31,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:09:31,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:09:31,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 05:09:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:09:32,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 05:09:32,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:09:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:09:32,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:09:32,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:09:32,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979622532] [2022-07-14 05:09:32,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:09:32,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208341475] [2022-07-14 05:09:32,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208341475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:09:32,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:09:32,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 05:09:32,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004864414] [2022-07-14 05:09:32,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:09:32,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 05:09:32,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:09:32,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 05:09:32,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:09:32,433 INFO L87 Difference]: Start difference. First operand 187 states and 229 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-07-14 05:09:32,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:09:32,486 INFO L93 Difference]: Finished difference Result 476 states and 582 transitions. [2022-07-14 05:09:32,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 05:09:32,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2022-07-14 05:09:32,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:09:32,487 INFO L225 Difference]: With dead ends: 476 [2022-07-14 05:09:32,487 INFO L226 Difference]: Without dead ends: 293 [2022-07-14 05:09:32,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:09:32,488 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 75 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:09:32,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 454 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:09:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-07-14 05:09:32,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 291. [2022-07-14 05:09:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 274 states have (on average 1.197080291970803) internal successors, (328), 285 states have internal predecessors, (328), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-14 05:09:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 354 transitions. [2022-07-14 05:09:32,495 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 354 transitions. Word has length 96 [2022-07-14 05:09:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:09:32,496 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 354 transitions. [2022-07-14 05:09:32,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-07-14 05:09:32,496 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 354 transitions. [2022-07-14 05:09:32,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-14 05:09:32,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:09:32,497 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:09:32,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 05:09:32,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:32,709 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:09:32,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:09:32,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1015837155, now seen corresponding path program 1 times [2022-07-14 05:09:32,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:09:32,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142409] [2022-07-14 05:09:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:32,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:09:32,750 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:09:32,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88886897] [2022-07-14 05:09:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:32,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:32,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:09:32,752 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:09:32,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 05:09:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:09:33,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 05:09:33,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:09:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 05:09:33,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:09:33,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:09:33,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142409] [2022-07-14 05:09:33,377 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:09:33,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88886897] [2022-07-14 05:09:33,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88886897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:09:33,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:09:33,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 05:09:33,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225544796] [2022-07-14 05:09:33,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:09:33,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 05:09:33,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:09:33,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 05:09:33,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 05:09:33,380 INFO L87 Difference]: Start difference. First operand 291 states and 354 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 05:09:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:09:33,528 INFO L93 Difference]: Finished difference Result 474 states and 579 transitions. [2022-07-14 05:09:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:09:33,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-07-14 05:09:33,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:09:33,530 INFO L225 Difference]: With dead ends: 474 [2022-07-14 05:09:33,530 INFO L226 Difference]: Without dead ends: 231 [2022-07-14 05:09:33,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:09:33,531 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 274 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:09:33,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 299 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:09:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-14 05:09:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-07-14 05:09:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 219 states have (on average 1.187214611872146) internal successors, (260), 225 states have internal predecessors, (260), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-14 05:09:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 276 transitions. [2022-07-14 05:09:33,538 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 276 transitions. Word has length 111 [2022-07-14 05:09:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:09:33,539 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 276 transitions. [2022-07-14 05:09:33,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 05:09:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 276 transitions. [2022-07-14 05:09:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-14 05:09:33,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:09:33,540 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:09:33,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 05:09:33,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:33,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:09:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:09:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash 379973459, now seen corresponding path program 1 times [2022-07-14 05:09:33,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:09:33,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442241593] [2022-07-14 05:09:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:33,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:09:33,789 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:09:33,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145714222] [2022-07-14 05:09:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:09:33,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:09:33,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:09:33,791 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:09:33,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 05:10:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:10:11,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 05:10:11,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:10:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:10:11,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:10:11,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:10:11,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442241593] [2022-07-14 05:10:11,878 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:10:11,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145714222] [2022-07-14 05:10:11,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145714222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:10:11,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:10:11,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 05:10:11,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337409806] [2022-07-14 05:10:11,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:10:11,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 05:10:11,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:10:11,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 05:10:11,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 05:10:11,880 INFO L87 Difference]: Start difference. First operand 231 states and 276 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 05:10:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:10:11,901 INFO L93 Difference]: Finished difference Result 414 states and 501 transitions. [2022-07-14 05:10:11,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:10:11,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 118 [2022-07-14 05:10:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:10:11,902 INFO L225 Difference]: With dead ends: 414 [2022-07-14 05:10:11,903 INFO L226 Difference]: Without dead ends: 234 [2022-07-14 05:10:11,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:10:11,904 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 2 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:10:11,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 629 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:10:11,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-14 05:10:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-07-14 05:10:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 221 states have (on average 1.1900452488687783) internal successors, (263), 228 states have internal predecessors, (263), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-14 05:10:11,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2022-07-14 05:10:11,910 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 118 [2022-07-14 05:10:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:10:11,910 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2022-07-14 05:10:11,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 05:10:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2022-07-14 05:10:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-14 05:10:11,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:10:11,911 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:10:11,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-14 05:10:12,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:10:12,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:10:12,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:10:12,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1827414795, now seen corresponding path program 1 times [2022-07-14 05:10:12,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:10:12,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069665645] [2022-07-14 05:10:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:10:12,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:10:12,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:10:12,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635090333] [2022-07-14 05:10:12,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:10:12,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:10:12,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:10:12,176 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:10:12,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-14 05:11:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:11:00,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 05:11:00,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:11:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 05:11:00,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 05:11:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 05:11:00,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:11:00,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069665645] [2022-07-14 05:11:00,372 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:11:00,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635090333] [2022-07-14 05:11:00,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635090333] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 05:11:00,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 05:11:00,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-14 05:11:00,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892343986] [2022-07-14 05:11:00,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 05:11:00,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 05:11:00,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:11:00,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 05:11:00,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 05:11:00,376 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 05:11:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:11:00,505 INFO L93 Difference]: Finished difference Result 428 states and 522 transitions. [2022-07-14 05:11:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 05:11:00,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-07-14 05:11:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:11:00,507 INFO L225 Difference]: With dead ends: 428 [2022-07-14 05:11:00,507 INFO L226 Difference]: Without dead ends: 243 [2022-07-14 05:11:00,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-07-14 05:11:00,508 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 12 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:11:00,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1036 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:11:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-14 05:11:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-07-14 05:11:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 229 states have (on average 1.2008733624454149) internal successors, (275), 236 states have internal predecessors, (275), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-14 05:11:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 292 transitions. [2022-07-14 05:11:00,520 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 292 transitions. Word has length 120 [2022-07-14 05:11:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:11:00,521 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 292 transitions. [2022-07-14 05:11:00,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 05:11:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 292 transitions. [2022-07-14 05:11:00,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-14 05:11:00,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:11:00,522 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:11:00,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-14 05:11:00,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-14 05:11:00,723 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:11:00,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:11:00,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1544509267, now seen corresponding path program 2 times [2022-07-14 05:11:00,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:11:00,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157690847] [2022-07-14 05:11:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:11:00,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:11:00,766 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:11:00,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665385965] [2022-07-14 05:11:00,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 05:11:00,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:11:00,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:11:00,768 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:11:00,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-14 05:11:01,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 05:11:01,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 05:11:01,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-14 05:11:01,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:11:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-14 05:11:01,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 05:11:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 05:11:02,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:11:02,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157690847] [2022-07-14 05:11:02,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:11:02,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665385965] [2022-07-14 05:11:02,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665385965] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 05:11:02,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 05:11:02,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-07-14 05:11:02,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951696495] [2022-07-14 05:11:02,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 05:11:02,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 05:11:02,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:11:02,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 05:11:02,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-07-14 05:11:02,030 INFO L87 Difference]: Start difference. First operand 243 states and 292 transitions. Second operand has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 05:11:02,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:11:02,531 INFO L93 Difference]: Finished difference Result 446 states and 547 transitions. [2022-07-14 05:11:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-14 05:11:02,531 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-07-14 05:11:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:11:02,532 INFO L225 Difference]: With dead ends: 446 [2022-07-14 05:11:02,532 INFO L226 Difference]: Without dead ends: 258 [2022-07-14 05:11:02,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2022-07-14 05:11:02,534 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 52 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 05:11:02,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1464 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 05:11:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-14 05:11:02,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 252. [2022-07-14 05:11:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 238 states have (on average 1.2058823529411764) internal successors, (287), 245 states have internal predecessors, (287), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-14 05:11:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 304 transitions. [2022-07-14 05:11:02,543 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 304 transitions. Word has length 124 [2022-07-14 05:11:02,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:11:02,543 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 304 transitions. [2022-07-14 05:11:02,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 05:11:02,543 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 304 transitions. [2022-07-14 05:11:02,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-14 05:11:02,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:11:02,544 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:11:02,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-14 05:11:02,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:11:02,745 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 05:11:02,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:11:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash 453394239, now seen corresponding path program 3 times [2022-07-14 05:11:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:11:02,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249851274] [2022-07-14 05:11:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:11:02,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:11:02,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:11:02,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075721556] [2022-07-14 05:11:02,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 05:11:02,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:11:02,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:11:02,789 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:11:02,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process