./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/nla-digbench-scaling/bresenham-ll_unwindbound10.c -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 d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:30:17,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:30:17,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:30:17,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:30:17,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:30:17,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:30:17,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:30:17,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:30:17,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:30:17,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:30:17,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:30:17,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:30:17,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:30:17,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:30:17,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:30:17,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:30:17,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:30:17,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:30:17,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:30:17,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:30:17,914 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:30:17,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:30:17,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:30:17,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:30:17,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:30:17,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:30:17,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:30:17,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:30:17,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:30:17,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:30:17,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:30:17,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:30:17,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:30:17,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:30:17,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:30:17,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:30:17,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:30:17,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:30:17,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:30:17,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:30:17,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:30:17,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:30:17,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 15:30:17,949 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:30:17,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:30:17,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:30:17,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:30:17,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:30:17,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:30:17,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:30:17,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:30:17,951 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:30:17,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:30:17,952 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:30:17,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 15:30:17,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:30:17,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:30:17,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:30:17,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:30:17,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:30:17,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:30:17,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:30:17,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:30:17,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:30:17,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:30:17,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:30:17,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:30:17,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:30:17,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:30:17,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:30:17,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:30:17,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 15:30:17,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 15:30:17,955 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:30:17,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:30:17,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:30:17,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f [2022-07-19 15:30:18,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:30:18,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:30:18,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:30:18,155 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:30:18,155 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:30:18,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2022-07-19 15:30:18,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da5c037d4/7376f39d6a184cd9bb1d6398397b8e87/FLAG782601c9f [2022-07-19 15:30:18,555 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:30:18,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2022-07-19 15:30:18,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da5c037d4/7376f39d6a184cd9bb1d6398397b8e87/FLAG782601c9f [2022-07-19 15:30:18,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da5c037d4/7376f39d6a184cd9bb1d6398397b8e87 [2022-07-19 15:30:18,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:30:18,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:30:18,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:30:18,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:30:18,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:30:18,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ba5004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18, skipping insertion in model container [2022-07-19 15:30:18,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:30:18,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:30:18,741 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/nla-digbench-scaling/bresenham-ll_unwindbound10.c[597,610] [2022-07-19 15:30:18,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:30:18,774 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:30:18,786 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/nla-digbench-scaling/bresenham-ll_unwindbound10.c[597,610] [2022-07-19 15:30:18,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:30:18,813 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:30:18,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18 WrapperNode [2022-07-19 15:30:18,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:30:18,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:30:18,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:30:18,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:30:18,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,835 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-07-19 15:30:18,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:30:18,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:30:18,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:30:18,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:30:18,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:30:18,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:30:18,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:30:18,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:30:18,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (1/1) ... [2022-07-19 15:30:18,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:30:18,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:18,878 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) [2022-07-19 15:30:18,879 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 [2022-07-19 15:30:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:30:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 15:30:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:30:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:30:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:30:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:30:18,939 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:30:18,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:30:19,031 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:30:19,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:30:19,035 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:30:19,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:30:19 BoogieIcfgContainer [2022-07-19 15:30:19,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:30:19,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:30:19,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:30:19,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:30:19,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:30:18" (1/3) ... [2022-07-19 15:30:19,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e0bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:30:19, skipping insertion in model container [2022-07-19 15:30:19,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:30:18" (2/3) ... [2022-07-19 15:30:19,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e0bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:30:19, skipping insertion in model container [2022-07-19 15:30:19,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:30:19" (3/3) ... [2022-07-19 15:30:19,067 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound10.c [2022-07-19 15:30:19,076 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:30:19,076 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:30:19,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:30:19,116 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@67b29f5b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1900053c [2022-07-19 15:30:19,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:30:19,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:30:19,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 15:30:19,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:19,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:19,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:19,127 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2022-07-19 15:30:19,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:19,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999030943] [2022-07-19 15:30:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:19,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:19,205 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:19,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542756773] [2022-07-19 15:30:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:19,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:19,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:19,208 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) [2022-07-19 15:30:19,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 15:30:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:19,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 15:30:19,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:30:19,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:30:19,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:19,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999030943] [2022-07-19 15:30:19,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:19,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542756773] [2022-07-19 15:30:19,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542756773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:30:19,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:30:19,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 15:30:19,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183100385] [2022-07-19 15:30:19,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:30:19,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 15:30:19,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:19,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 15:30:19,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:30:19,374 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:30:19,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:19,449 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2022-07-19 15:30:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 15:30:19,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-19 15:30:19,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:19,456 INFO L225 Difference]: With dead ends: 54 [2022-07-19 15:30:19,456 INFO L226 Difference]: Without dead ends: 25 [2022-07-19 15:30:19,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:30:19,460 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:19,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:30:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-19 15:30:19,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-07-19 15:30:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:30:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-07-19 15:30:19,484 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2022-07-19 15:30:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:19,485 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-07-19 15:30:19,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:30:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-07-19 15:30:19,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 15:30:19,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:19,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:19,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 15:30:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-19 15:30:19,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2022-07-19 15:30:19,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:19,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767886869] [2022-07-19 15:30:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:19,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:19,710 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:19,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141132625] [2022-07-19 15:30:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:19,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:19,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:19,717 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) [2022-07-19 15:30:19,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 15:30:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:19,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 15:30:19,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:30:19,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:30:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 15:30:20,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:20,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767886869] [2022-07-19 15:30:20,016 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:20,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141132625] [2022-07-19 15:30:20,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141132625] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:30:20,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:30:20,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-07-19 15:30:20,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745569277] [2022-07-19 15:30:20,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:30:20,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 15:30:20,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 15:30:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 15:30:20,024 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:30:20,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:20,224 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-07-19 15:30:20,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 15:30:20,224 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-19 15:30:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:20,225 INFO L225 Difference]: With dead ends: 41 [2022-07-19 15:30:20,225 INFO L226 Difference]: Without dead ends: 34 [2022-07-19 15:30:20,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-19 15:30:20,227 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:20,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:30:20,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-19 15:30:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-07-19 15:30:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:30:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-07-19 15:30:20,232 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2022-07-19 15:30:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:20,232 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-07-19 15:30:20,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:30:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-07-19 15:30:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 15:30:20,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:20,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:20,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 15:30:20,452 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,SelfDestructingSolverStorable1 [2022-07-19 15:30:20,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:20,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:20,453 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2022-07-19 15:30:20,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:20,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907523288] [2022-07-19 15:30:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:20,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:20,484 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:20,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440877330] [2022-07-19 15:30:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:20,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:20,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:20,487 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) [2022-07-19 15:30:20,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 15:30:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:20,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 15:30:20,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:30:20,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:30:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:30:20,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:20,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907523288] [2022-07-19 15:30:20,601 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:20,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440877330] [2022-07-19 15:30:20,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440877330] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:30:20,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:30:20,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-07-19 15:30:20,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495238492] [2022-07-19 15:30:20,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:30:20,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 15:30:20,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 15:30:20,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:30:20,604 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:30:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:20,662 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2022-07-19 15:30:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 15:30:20,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-07-19 15:30:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:20,666 INFO L225 Difference]: With dead ends: 73 [2022-07-19 15:30:20,666 INFO L226 Difference]: Without dead ends: 67 [2022-07-19 15:30:20,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 15:30:20,669 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:20,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 100 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:30:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-19 15:30:20,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2022-07-19 15:30:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 15:30:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-07-19 15:30:20,690 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2022-07-19 15:30:20,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:20,690 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-07-19 15:30:20,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:30:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-07-19 15:30:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 15:30:20,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:20,693 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:20,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 15:30:20,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:20,906 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:20,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:20,907 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2022-07-19 15:30:20,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:20,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62433070] [2022-07-19 15:30:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:20,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:20,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:20,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334170477] [2022-07-19 15:30:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:20,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:20,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:20,915 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) [2022-07-19 15:30:20,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 15:30:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:20,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-19 15:30:20,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 15:30:21,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:30:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 15:30:21,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:21,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62433070] [2022-07-19 15:30:21,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:21,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334170477] [2022-07-19 15:30:21,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334170477] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:30:21,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:30:21,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-07-19 15:30:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146728563] [2022-07-19 15:30:21,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:30:21,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 15:30:21,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:21,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 15:30:21,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-07-19 15:30:21,491 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 15:30:21,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:21,995 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2022-07-19 15:30:21,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 15:30:21,996 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2022-07-19 15:30:21,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:21,997 INFO L225 Difference]: With dead ends: 81 [2022-07-19 15:30:21,997 INFO L226 Difference]: Without dead ends: 73 [2022-07-19 15:30:21,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=1116, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 15:30:21,998 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:21,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 106 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 271 Invalid, 0 Unknown, 90 Unchecked, 0.1s Time] [2022-07-19 15:30:21,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-19 15:30:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2022-07-19 15:30:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 15:30:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-07-19 15:30:22,006 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2022-07-19 15:30:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:22,006 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-07-19 15:30:22,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 15:30:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-07-19 15:30:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 15:30:22,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:22,008 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:22,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 15:30:22,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:22,219 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2021783820, now seen corresponding path program 1 times [2022-07-19 15:30:22,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:22,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962659193] [2022-07-19 15:30:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:22,227 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:22,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790531708] [2022-07-19 15:30:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:22,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:22,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:22,231 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) [2022-07-19 15:30:22,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 15:30:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:22,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 15:30:22,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 15:30:37,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:30:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 15:30:38,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:38,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962659193] [2022-07-19 15:30:38,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:38,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790531708] [2022-07-19 15:30:38,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790531708] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:30:38,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:30:38,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-07-19 15:30:38,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094375605] [2022-07-19 15:30:38,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:30:38,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:30:38,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:38,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:30:38,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:30:38,071 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:30:40,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:30:44,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:30:46,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:30:48,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:30:50,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:30:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:52,459 INFO L93 Difference]: Finished difference Result 92 states and 109 transitions. [2022-07-19 15:30:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:30:52,460 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-07-19 15:30:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:52,461 INFO L225 Difference]: With dead ends: 92 [2022-07-19 15:30:52,461 INFO L226 Difference]: Without dead ends: 86 [2022-07-19 15:30:52,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2022-07-19 15:30:52,462 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:52,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 59 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 116 Invalid, 5 Unknown, 0 Unchecked, 10.1s Time] [2022-07-19 15:30:52,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-19 15:30:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2022-07-19 15:30:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.173913043478261) internal successors, (81), 69 states have internal predecessors, (81), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 15:30:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2022-07-19 15:30:52,473 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 35 [2022-07-19 15:30:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:52,473 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2022-07-19 15:30:52,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:30:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2022-07-19 15:30:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 15:30:52,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:52,474 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:52,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 15:30:52,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:52,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:52,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:52,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2132634866, now seen corresponding path program 1 times [2022-07-19 15:30:52,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:52,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588059150] [2022-07-19 15:30:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:52,682 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:52,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380334423] [2022-07-19 15:30:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:52,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:52,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:52,683 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) [2022-07-19 15:30:52,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 15:30:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:30:52,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 15:30:52,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 15:30:52,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:30:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 15:30:52,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:52,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588059150] [2022-07-19 15:30:52,917 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:52,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380334423] [2022-07-19 15:30:52,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380334423] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:30:52,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:30:52,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-19 15:30:52,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439660528] [2022-07-19 15:30:52,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:30:52,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 15:30:52,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:52,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 15:30:52,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-19 15:30:52,920 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 15:30:53,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:53,065 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2022-07-19 15:30:53,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:30:53,065 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2022-07-19 15:30:53,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:53,066 INFO L225 Difference]: With dead ends: 93 [2022-07-19 15:30:53,066 INFO L226 Difference]: Without dead ends: 87 [2022-07-19 15:30:53,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-07-19 15:30:53,067 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:53,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:30:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-19 15:30:53,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2022-07-19 15:30:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 states have internal predecessors, (76), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:30:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2022-07-19 15:30:53,079 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 35 [2022-07-19 15:30:53,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:53,079 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2022-07-19 15:30:53,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 15:30:53,080 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2022-07-19 15:30:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 15:30:53,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:53,080 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:53,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 15:30:53,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:53,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:53,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1410392757, now seen corresponding path program 2 times [2022-07-19 15:30:53,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:53,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022900108] [2022-07-19 15:30:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:53,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:53,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:53,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122804185] [2022-07-19 15:30:53,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 15:30:53,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:53,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:53,289 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) [2022-07-19 15:30:53,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 15:30:53,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 15:30:53,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:30:53,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 15:30:53,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:30:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 15:30:53,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:30:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 15:30:53,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:30:53,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022900108] [2022-07-19 15:30:53,570 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:30:53,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122804185] [2022-07-19 15:30:53,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122804185] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:30:53,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:30:53,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-19 15:30:53,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362292312] [2022-07-19 15:30:53,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:30:53,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:30:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:30:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:30:53,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:30:53,572 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:30:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:30:53,710 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2022-07-19 15:30:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:30:53,711 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 45 [2022-07-19 15:30:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:30:53,712 INFO L225 Difference]: With dead ends: 104 [2022-07-19 15:30:53,712 INFO L226 Difference]: Without dead ends: 98 [2022-07-19 15:30:53,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-19 15:30:53,713 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:30:53,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:30:53,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-07-19 15:30:53,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2022-07-19 15:30:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 70 states have internal predecessors, (82), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 15:30:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2022-07-19 15:30:53,723 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 45 [2022-07-19 15:30:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:30:53,723 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2022-07-19 15:30:53,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:30:53,723 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2022-07-19 15:30:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 15:30:53,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:30:53,725 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:30:53,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 15:30:53,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:53,942 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:30:53,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:30:53,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1900020427, now seen corresponding path program 3 times [2022-07-19 15:30:53,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:30:53,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752859233] [2022-07-19 15:30:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:30:53,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:30:53,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:30:53,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015914098] [2022-07-19 15:30:53,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 15:30:53,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:30:53,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:30:53,950 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) [2022-07-19 15:30:53,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 15:30:55,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 15:30:55,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:30:55,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 15:30:55,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:31:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 15:31:00,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:31:02,101 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 15:31:02,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:31:02,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752859233] [2022-07-19 15:31:02,102 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:31:02,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015914098] [2022-07-19 15:31:02,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015914098] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:31:02,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:31:02,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2022-07-19 15:31:02,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891970811] [2022-07-19 15:31:02,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:31:02,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 15:31:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:31:02,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 15:31:02,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-19 15:31:02,103 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand has 17 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:31:04,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:06,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:08,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:12,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:14,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:18,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:20,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:46,619 WARN L233 SmtUtils]: Spent 22.41s on a formula simplification. DAG size of input: 66 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 15:31:49,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:51,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:53,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:55,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:57,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:57,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:31:57,382 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2022-07-19 15:31:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 15:31:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-07-19 15:31:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:31:57,383 INFO L225 Difference]: With dead ends: 93 [2022-07-19 15:31:57,384 INFO L226 Difference]: Without dead ends: 87 [2022-07-19 15:31:57,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-07-19 15:31:57,385 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-07-19 15:31:57,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 83 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 12 Unknown, 0 Unchecked, 25.2s Time] [2022-07-19 15:31:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-19 15:31:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 50. [2022-07-19 15:31:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 15:31:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-07-19 15:31:57,391 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 45 [2022-07-19 15:31:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:31:57,392 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-07-19 15:31:57,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:31:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-07-19 15:31:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-19 15:31:57,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:31:57,393 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:31:57,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 15:31:57,598 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,SelfDestructingSolverStorable7 [2022-07-19 15:31:57,599 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:31:57,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:31:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2022-07-19 15:31:57,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:31:57,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337072581] [2022-07-19 15:31:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:57,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:31:57,606 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:31:57,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378880866] [2022-07-19 15:31:57,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:57,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:57,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:31:57,620 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) [2022-07-19 15:31:57,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 15:31:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:31:57,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 15:31:57,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:31:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:31:57,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:31:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 15:31:57,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:31:57,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337072581] [2022-07-19 15:31:57,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:31:57,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378880866] [2022-07-19 15:31:57,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378880866] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:31:57,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:31:57,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-07-19 15:31:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270884497] [2022-07-19 15:31:57,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:31:57,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:31:57,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:31:57,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:31:57,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:31:57,819 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:31:57,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:31:57,972 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2022-07-19 15:31:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 15:31:57,973 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 49 [2022-07-19 15:31:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:31:57,974 INFO L225 Difference]: With dead ends: 116 [2022-07-19 15:31:57,974 INFO L226 Difference]: Without dead ends: 110 [2022-07-19 15:31:57,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-07-19 15:31:57,976 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:31:57,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 154 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:31:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-07-19 15:31:57,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-07-19 15:31:57,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-19 15:31:57,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2022-07-19 15:31:57,999 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 49 [2022-07-19 15:31:57,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:31:57,999 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2022-07-19 15:31:57,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:31:58,000 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2022-07-19 15:31:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 15:31:58,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:31:58,005 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:31:58,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 15:31:58,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:58,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:31:58,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:31:58,216 INFO L85 PathProgramCache]: Analyzing trace with hash 297311502, now seen corresponding path program 2 times [2022-07-19 15:31:58,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:31:58,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934235555] [2022-07-19 15:31:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:58,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:31:58,224 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:31:58,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355714229] [2022-07-19 15:31:58,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 15:31:58,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:58,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:31:58,226 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) [2022-07-19 15:31:58,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 15:31:58,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 15:31:58,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:31:58,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-19 15:31:58,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:31:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-19 15:31:58,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-19 15:32:00,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:00,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934235555] [2022-07-19 15:32:00,962 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:00,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355714229] [2022-07-19 15:32:00,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355714229] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:00,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:00,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 48 [2022-07-19 15:32:00,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13257784] [2022-07-19 15:32:00,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:00,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-19 15:32:00,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:00,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-19 15:32:00,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1941, Unknown=0, NotChecked=0, Total=2256 [2022-07-19 15:32:00,965 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 48 states, 46 states have (on average 2.5) internal successors, (115), 47 states have internal predecessors, (115), 22 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 15:32:02,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:02,608 INFO L93 Difference]: Finished difference Result 220 states and 244 transitions. [2022-07-19 15:32:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-19 15:32:02,608 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 2.5) internal successors, (115), 47 states have internal predecessors, (115), 22 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 109 [2022-07-19 15:32:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:02,609 INFO L225 Difference]: With dead ends: 220 [2022-07-19 15:32:02,609 INFO L226 Difference]: Without dead ends: 212 [2022-07-19 15:32:02,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=568, Invalid=3338, Unknown=0, NotChecked=0, Total=3906 [2022-07-19 15:32:02,611 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 78 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:02,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 473 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 15:32:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-19 15:32:02,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 200. [2022-07-19 15:32:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 160 states have (on average 1.125) internal successors, (180), 160 states have internal predecessors, (180), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-19 15:32:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2022-07-19 15:32:02,626 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 109 [2022-07-19 15:32:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:02,626 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2022-07-19 15:32:02,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 2.5) internal successors, (115), 47 states have internal predecessors, (115), 22 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 15:32:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2022-07-19 15:32:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 15:32:02,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:02,628 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:02,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:02,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 15:32:02,840 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:02,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:02,841 INFO L85 PathProgramCache]: Analyzing trace with hash 977369872, now seen corresponding path program 1 times [2022-07-19 15:32:02,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:02,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241400458] [2022-07-19 15:32:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:02,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:02,848 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:02,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432865049] [2022-07-19 15:32:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:02,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:02,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:02,852 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:02,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 15:32:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:32:02,906 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 15:32:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 15:32:02,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 15:32:02,978 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 15:32:02,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:32:03,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:03,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 15:32:03,203 INFO L356 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:03,205 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:32:03,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:32:03 BoogieIcfgContainer [2022-07-19 15:32:03,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:32:03,245 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:32:03,245 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:32:03,245 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:32:03,246 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:30:19" (3/4) ... [2022-07-19 15:32:03,247 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 15:32:03,297 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 15:32:03,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:32:03,298 INFO L158 Benchmark]: Toolchain (without parser) took 104724.80ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 96.1MB in the beginning and 53.2MB in the end (delta: 42.9MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2022-07-19 15:32:03,298 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 132.1MB. Free memory was 105.5MB in the beginning and 105.5MB in the end (delta: 23.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:32:03,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.16ms. Allocated memory is still 132.1MB. Free memory was 95.8MB in the beginning and 105.7MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 15:32:03,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.36ms. Allocated memory is still 132.1MB. Free memory was 105.7MB in the beginning and 104.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:32:03,299 INFO L158 Benchmark]: Boogie Preprocessor took 11.05ms. Allocated memory is still 132.1MB. Free memory was 104.4MB in the beginning and 103.6MB in the end (delta: 760.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:32:03,299 INFO L158 Benchmark]: RCFGBuilder took 189.06ms. Allocated memory is still 132.1MB. Free memory was 103.6MB in the beginning and 93.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 15:32:03,299 INFO L158 Benchmark]: TraceAbstraction took 104207.35ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 92.4MB in the beginning and 58.5MB in the end (delta: 33.9MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. [2022-07-19 15:32:03,299 INFO L158 Benchmark]: Witness Printer took 52.45ms. Allocated memory is still 159.4MB. Free memory was 58.5MB in the beginning and 53.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 15:32:03,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 132.1MB. Free memory was 105.5MB in the beginning and 105.5MB in the end (delta: 23.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.16ms. Allocated memory is still 132.1MB. Free memory was 95.8MB in the beginning and 105.7MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.36ms. Allocated memory is still 132.1MB. Free memory was 105.7MB in the beginning and 104.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.05ms. Allocated memory is still 132.1MB. Free memory was 104.4MB in the beginning and 103.6MB in the end (delta: 760.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 189.06ms. Allocated memory is still 132.1MB. Free memory was 103.6MB in the beginning and 93.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 104207.35ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 92.4MB in the beginning and 58.5MB in the end (delta: 33.9MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. * Witness Printer took 52.45ms. Allocated memory is still 159.4MB. Free memory was 58.5MB in the beginning and 53.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0, v=-33, X=37, x=0, y=0, Y=2] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-33, x=0, X=37, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=-33, x=0, x=0, x=0, X=37, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=-33, X=37, x=0, x=0, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=-33, X=37, x=0, x=0, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=1, v=-29, X=37, x=0, x=0, x=0, y=0, Y=2] [L45] x++ VAL [counter=1, v=-29, x=1, X=37, x=0, x=0, y=0, Y=2] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-29, x=0, X=37, x=0, x=1, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=-29, x=2, x=1, X=37, x=0, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=-29, x=1, x=2, x=0, X=37, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-29, x=0, X=37, x=1, x=2, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-25, x=0, x=2, X=37, x=1, y=0, Y=2] [L45] x++ VAL [counter=2, v=-25, x=0, X=37, x=2, x=2, Y=2, y=0] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-25, x=2, X=37, x=2, x=0, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=-25, x=4, x=2, X=37, x=0, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=3, v=-25, x=0, X=37, x=2, x=4, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-25, X=37, x=4, x=0, x=2, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=3, v=-21, x=2, x=0, x=4, X=37, Y=2, y=0] [L45] x++ VAL [counter=3, v=-21, x=0, x=3, X=37, x=4, Y=2, y=0] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-21, x=4, x=3, x=0, X=37, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-21, x=3, x=6, x=0, X=37, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=4, v=-21, x=6, X=37, x=3, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-21, x=3, x=0, x=6, X=37, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=-17, x=3, X=37, x=6, x=0, Y=2, y=0] [L45] x++ VAL [counter=4, v=-17, X=37, x=6, x=0, x=4, Y=2, y=0] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=-17, x=6, X=37, x=4, x=0, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=-17, x=0, x=8, x=4, X=37, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=5, v=-17, x=8, x=4, x=0, X=37, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=-17, x=4, X=37, x=8, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=5, v=-13, x=4, x=8, X=37, x=0, Y=2, y=0] [L45] x++ VAL [counter=5, v=-13, x=5, x=8, x=0, X=37, y=0, Y=2] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-13, x=5, X=37, x=0, x=8, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=6, v=-13, x=10, X=37, x=5, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=6] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=6, v=-13, X=37, x=0, x=5, x=10, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=6, v=-13, x=5, X=37, x=10, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=6, v=-9, X=37, x=5, x=0, x=10, y=0, Y=2] [L45] x++ VAL [counter=6, v=-9, X=37, x=0, x=10, x=6, Y=2, y=0] [L31] EXPR counter++ VAL [counter=7, counter++=6, v=-9, x=0, x=6, x=10, X=37, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=7, v=-9, x=12, x=0, X=37, x=6, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=7] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=7, v=-9, X=37, x=12, x=0, x=6, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=7, v=-9, x=12, x=6, X=37, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=7, v=-5, X=37, x=12, x=6, x=0, Y=2, y=0] [L45] x++ VAL [counter=7, v=-5, X=37, x=7, x=0, x=12, Y=2, y=0] [L31] EXPR counter++ VAL [counter=8, counter++=7, v=-5, X=37, x=12, x=0, x=7, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=8, v=-5, x=0, x=14, X=37, x=7, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=8] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=8, v=-5, x=0, X=37, x=7, x=14, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=8, v=-5, x=0, x=7, X=37, x=14, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=8, v=-1, X=37, x=14, x=0, x=7, Y=2, y=0] [L45] x++ VAL [counter=8, v=-1, x=14, X=37, x=0, x=8, y=0, Y=2] [L31] EXPR counter++ VAL [counter=9, counter++=8, v=-1, x=8, x=14, x=0, X=37, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=9, v=-1, X=37, x=16, x=0, x=8, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=9] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=9, v=-1, x=0, x=8, X=37, x=16, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=9, v=-1, x=8, X=37, x=16, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=9, v=3, X=37, x=0, x=16, x=8, Y=2, y=0] [L45] x++ VAL [counter=9, v=3, x=0, x=9, X=37, x=16, y=0, Y=2] [L31] EXPR counter++ VAL [counter=10, counter++=9, v=3, x=9, x=0, X=37, x=16, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=10, v=3, x=0, X=37, x=18, x=9, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=10] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=10, v=3, X=37, x=0, x=18, x=9, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=10, v=3, x=0, X=37, x=18, x=9, y=0, Y=2] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=10, v=-67, x=0, x=18, x=9, X=37, Y=2, y=1] [L45] x++ VAL [counter=10, v=-67, X=37, x=0, x=10, x=18, y=1, Y=2] [L31] EXPR counter++ VAL [counter=11, counter++=10, v=-67, X=37, x=0, x=18, x=10, Y=2, y=1] [L31] COND FALSE !(counter++<10) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=11, v=-67, x=10, x=20, x=10, X=37, Y=2, y=1] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=11] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 104.1s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 72.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 mSolverCounterUnknown, 377 SdHoareTripleChecker+Valid, 36.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372 mSDsluCounter, 1259 SdHoareTripleChecker+Invalid, 36.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 90 IncrementalHoareTripleChecker+Unchecked, 1082 mSDsCounter, 202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3248 IncrementalHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 202 mSolverCounterUnsat, 177 mSDtfsCounter, 3248 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 819 GetRequests, 597 SyntacticMatches, 8 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 41.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=10, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 97 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 27.1s InterpolantComputationTime, 497 NumberOfCodeBlocks, 477 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 749 ConstructedInterpolants, 4 QuantifiedInterpolants, 6152 SizeOfPredicates, 44 NumberOfNonLiveVariables, 1228 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 748/1550 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-19 15:32:03,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE