./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ss1.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/array-fpi/ss1.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 26cc6c43657aae3d6045b0e296032a25844d2e64f01344915dc1323c4b8b39f3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:45:46,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:45:46,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:45:46,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:45:46,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:45:46,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:45:46,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:45:46,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:45:46,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:45:46,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:45:46,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:45:46,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:45:46,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:45:46,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:45:46,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:45:46,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:45:46,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:45:46,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:45:46,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:45:46,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:45:46,772 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:45:46,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:45:46,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:45:46,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:45:46,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:45:46,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:45:46,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:45:46,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:45:46,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:45:46,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:45:46,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:45:46,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:45:46,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:45:46,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:45:46,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:45:46,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:45:46,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:45:46,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:45:46,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:45:46,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:45:46,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:45:46,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:45:46,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 10:45:46,824 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:45:46,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:45:46,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:45:46,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:45:46,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:45:46,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:45:46,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:45:46,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:45:46,826 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:45:46,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:45:46,827 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:45:46,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 10:45:46,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:45:46,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:45:46,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:45:46,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:45:46,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:45:46,828 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:45:46,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:45:46,829 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:45:46,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:45:46,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:45:46,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:45:46,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:45:46,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:45:46,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:45:46,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:45:46,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:45:46,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 10:45:46,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 10:45:46,836 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:45:46,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:45:46,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:45:46,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26cc6c43657aae3d6045b0e296032a25844d2e64f01344915dc1323c4b8b39f3 [2022-07-19 10:45:47,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:45:47,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:45:47,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:45:47,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:45:47,079 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:45:47,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ss1.c [2022-07-19 10:45:47,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5f42b2f/96c3962e029f424dbea0ba45fa7f0d32/FLAG87ff18b83 [2022-07-19 10:45:47,483 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:45:47,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss1.c [2022-07-19 10:45:47,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5f42b2f/96c3962e029f424dbea0ba45fa7f0d32/FLAG87ff18b83 [2022-07-19 10:45:47,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5f42b2f/96c3962e029f424dbea0ba45fa7f0d32 [2022-07-19 10:45:47,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:45:47,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:45:47,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:45:47,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:45:47,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:45:47,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:45:47" (1/1) ... [2022-07-19 10:45:47,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f29867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:47, skipping insertion in model container [2022-07-19 10:45:47,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:45:47" (1/1) ... [2022-07-19 10:45:47,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:45:47,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:45:48,134 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/array-fpi/ss1.c[586,599] [2022-07-19 10:45:48,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:45:48,165 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:45:48,177 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/array-fpi/ss1.c[586,599] [2022-07-19 10:45:48,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:45:48,199 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:45:48,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48 WrapperNode [2022-07-19 10:45:48,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:45:48,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:45:48,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:45:48,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:45:48,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (1/1) ... [2022-07-19 10:45:48,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (1/1) ... [2022-07-19 10:45:48,234 INFO L137 Inliner]: procedures = 17, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2022-07-19 10:45:48,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:45:48,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:45:48,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:45:48,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:45:48,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (1/1) ... [2022-07-19 10:45:48,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (1/1) ... [2022-07-19 10:45:48,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (1/1) ... [2022-07-19 10:45:48,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (1/1) ... [2022-07-19 10:45:48,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (1/1) ... [2022-07-19 10:45:48,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (1/1) ... [2022-07-19 10:45:48,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (1/1) ... [2022-07-19 10:45:48,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:45:48,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:45:48,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:45:48,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:45:48,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (1/1) ... [2022-07-19 10:45:48,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:45:48,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:45:48,298 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 10:45:48,303 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 10:45:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:45:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 10:45:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 10:45:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 10:45:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 10:45:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:45:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:45:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 10:45:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 10:45:48,381 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:45:48,382 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:45:48,498 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:45:48,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:45:48,519 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 10:45:48,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:45:48 BoogieIcfgContainer [2022-07-19 10:45:48,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:45:48,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:45:48,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:45:48,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:45:48,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:45:47" (1/3) ... [2022-07-19 10:45:48,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54773698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:45:48, skipping insertion in model container [2022-07-19 10:45:48,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:48" (2/3) ... [2022-07-19 10:45:48,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54773698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:45:48, skipping insertion in model container [2022-07-19 10:45:48,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:45:48" (3/3) ... [2022-07-19 10:45:48,535 INFO L111 eAbstractionObserver]: Analyzing ICFG ss1.c [2022-07-19 10:45:48,546 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:45:48,557 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:45:48,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:45:48,608 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@39f4d488, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@452418fb [2022-07-19 10:45:48,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:45:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 10:45:48,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:45:48,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:45:48,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:45:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:45:48,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2022-07-19 10:45:48,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:45:48,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333294194] [2022-07-19 10:45:48,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:45:48,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:45:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:45:48,755 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 10:45:48,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:45:48,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333294194] [2022-07-19 10:45:48,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333294194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:45:48,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:45:48,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 10:45:48,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561949805] [2022-07-19 10:45:48,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:45:48,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 10:45:48,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:45:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 10:45:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:45:48,791 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:45:48,805 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-07-19 10:45:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 10:45:48,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-19 10:45:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:45:48,814 INFO L225 Difference]: With dead ends: 44 [2022-07-19 10:45:48,814 INFO L226 Difference]: Without dead ends: 20 [2022-07-19 10:45:48,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:45:48,820 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:45:48,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:45:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-19 10:45:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-19 10:45:48,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-07-19 10:45:48,848 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2022-07-19 10:45:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:45:48,848 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-07-19 10:45:48,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-07-19 10:45:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 10:45:48,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:45:48,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:45:48,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 10:45:48,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:45:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:45:48,853 INFO L85 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2022-07-19 10:45:48,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:45:48,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057836271] [2022-07-19 10:45:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:45:48,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:45:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:45:48,938 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 10:45:48,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:45:48,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057836271] [2022-07-19 10:45:48,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057836271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:45:48,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:45:48,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 10:45:48,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568781368] [2022-07-19 10:45:48,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:45:48,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 10:45:48,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:45:48,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 10:45:48,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:45:48,944 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:49,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:45:49,023 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-07-19 10:45:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 10:45:49,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-19 10:45:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:45:49,024 INFO L225 Difference]: With dead ends: 41 [2022-07-19 10:45:49,025 INFO L226 Difference]: Without dead ends: 28 [2022-07-19 10:45:49,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:45:49,026 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:45:49,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:45:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-19 10:45:49,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-07-19 10:45:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-07-19 10:45:49,031 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2022-07-19 10:45:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:45:49,032 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-07-19 10:45:49,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-07-19 10:45:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-19 10:45:49,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:45:49,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:45:49,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 10:45:49,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:45:49,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:45:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2022-07-19 10:45:49,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:45:49,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244398533] [2022-07-19 10:45:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:45:49,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:45:49,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:45:49,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22855735] [2022-07-19 10:45:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:45:49,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:45:49,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:45:49,082 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 10:45:49,105 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 10:45:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:45:49,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-19 10:45:49,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:45:49,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 10:45:49,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:49,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 10:45:49,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:49,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-07-19 10:45:49,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:49,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2022-07-19 10:45:49,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:49,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 33 [2022-07-19 10:45:49,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:49,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 43 [2022-07-19 10:45:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:45:49,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:45:50,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:45:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:45:50,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:45:50,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244398533] [2022-07-19 10:45:50,417 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:45:50,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22855735] [2022-07-19 10:45:50,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22855735] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:45:50,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:45:50,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2022-07-19 10:45:50,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508838292] [2022-07-19 10:45:50,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:45:50,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 10:45:50,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:45:50,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 10:45:50,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2022-07-19 10:45:50,420 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:51,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:45:51,368 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2022-07-19 10:45:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 10:45:51,369 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-19 10:45:51,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:45:51,370 INFO L225 Difference]: With dead ends: 52 [2022-07-19 10:45:51,370 INFO L226 Difference]: Without dead ends: 42 [2022-07-19 10:45:51,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2022-07-19 10:45:51,371 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 10:45:51,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 78 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 283 Invalid, 0 Unknown, 4 Unchecked, 0.4s Time] [2022-07-19 10:45:51,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-19 10:45:51,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2022-07-19 10:45:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-07-19 10:45:51,386 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 23 [2022-07-19 10:45:51,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:45:51,386 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-07-19 10:45:51,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-07-19 10:45:51,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 10:45:51,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:45:51,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:45:51,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 10:45:51,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:45:51,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:45:51,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:45:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1774307726, now seen corresponding path program 2 times [2022-07-19 10:45:51,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:45:51,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919659432] [2022-07-19 10:45:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:45:51,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:45:51,656 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:45:51,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864783950] [2022-07-19 10:45:51,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:45:51,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:45:51,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:45:51,658 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 10:45:51,659 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 10:45:51,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:45:51,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:45:51,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 10:45:51,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:45:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 10:45:51,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:45:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 10:45:51,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:45:51,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919659432] [2022-07-19 10:45:51,796 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:45:51,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864783950] [2022-07-19 10:45:51,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864783950] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:45:51,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:45:51,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-19 10:45:51,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57053360] [2022-07-19 10:45:51,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:45:51,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 10:45:51,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:45:51,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 10:45:51,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 10:45:51,798 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:45:51,919 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2022-07-19 10:45:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 10:45:51,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-19 10:45:51,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:45:51,920 INFO L225 Difference]: With dead ends: 80 [2022-07-19 10:45:51,920 INFO L226 Difference]: Without dead ends: 53 [2022-07-19 10:45:51,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-19 10:45:51,922 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:45:51,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 30 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:45:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-19 10:45:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2022-07-19 10:45:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2022-07-19 10:45:51,931 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2022-07-19 10:45:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:45:51,931 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2022-07-19 10:45:51,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2022-07-19 10:45:51,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 10:45:51,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:45:51,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:45:51,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 10:45:52,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-19 10:45:52,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:45:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:45:52,156 INFO L85 PathProgramCache]: Analyzing trace with hash 119582130, now seen corresponding path program 3 times [2022-07-19 10:45:52,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:45:52,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562685395] [2022-07-19 10:45:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:45:52,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:45:52,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:45:52,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693973852] [2022-07-19 10:45:52,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 10:45:52,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:45:52,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:45:52,178 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 10:45:52,192 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 10:45:52,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 10:45:52,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:45:52,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 10:45:52,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:45:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 10:45:52,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:45:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 10:45:52,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:45:52,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562685395] [2022-07-19 10:45:52,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:45:52,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693973852] [2022-07-19 10:45:52,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693973852] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:45:52,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:45:52,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-19 10:45:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072024490] [2022-07-19 10:45:52,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:45:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 10:45:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:45:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 10:45:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 10:45:52,326 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:52,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:45:52,428 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2022-07-19 10:45:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 10:45:52,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-19 10:45:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:45:52,429 INFO L225 Difference]: With dead ends: 47 [2022-07-19 10:45:52,429 INFO L226 Difference]: Without dead ends: 35 [2022-07-19 10:45:52,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-19 10:45:52,430 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:45:52,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 20 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:45:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-19 10:45:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-07-19 10:45:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-07-19 10:45:52,435 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 25 [2022-07-19 10:45:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:45:52,436 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-07-19 10:45:52,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:45:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-07-19 10:45:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-19 10:45:52,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:45:52,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:45:52,460 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 10:45:52,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:45:52,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:45:52,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:45:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash 666081912, now seen corresponding path program 4 times [2022-07-19 10:45:52,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:45:52,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163986368] [2022-07-19 10:45:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:45:52,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:45:52,678 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:45:52,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737794187] [2022-07-19 10:45:52,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 10:45:52,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:45:52,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:45:52,680 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 10:45:52,706 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 10:45:52,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 10:45:52,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:45:52,743 WARN L261 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-19 10:45:52,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:45:52,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 10:45:52,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:52,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 10:45:52,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:52,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:52,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-19 10:45:52,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:52,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:45:52,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:52,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-07-19 10:45:52,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:52,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:52,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:52,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:45:53,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2022-07-19 10:45:53,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:53,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:45:53,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:53,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 41 [2022-07-19 10:45:53,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:53,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:53,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2022-07-19 10:45:53,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:53,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:45:53,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:53,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2022-07-19 10:45:53,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:53,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 42 [2022-07-19 10:45:53,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:45:53,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 44 [2022-07-19 10:45:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:45:53,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:46:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:46:26,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:46:26,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163986368] [2022-07-19 10:46:26,748 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:46:26,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737794187] [2022-07-19 10:46:26,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737794187] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:46:26,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:46:26,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2022-07-19 10:46:26,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552639423] [2022-07-19 10:46:26,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:46:26,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-19 10:46:26,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:46:26,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-19 10:46:26,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1328, Unknown=5, NotChecked=0, Total=1482 [2022-07-19 10:46:26,751 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 39 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:46:48,833 WARN L833 $PredicateComparison]: unable to prove that (and (or (< 2 c_~N~0) (= (+ (* c_~N~0 2) (* c_~N~0 c_~N~0)) (let ((.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse6 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse6))))) (let ((.cse10 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse4 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse2 (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse9 (store .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse0 .cse1 .cse4 .cse6)))) (store .cse9 .cse7 (+ (select .cse10 .cse7) (select (select (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| .cse9) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse0 .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) .cse4 .cse5 .cse6)))))))))))) (forall ((~N~0 Int)) (or (= (let ((.cse25 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse18 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse19 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse16 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse18))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19))) (let ((.cse20 (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse16 .cse18))))) (let ((.cse22 (select .cse20 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse15 (select .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse13 (store .cse20 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse21 (store .cse22 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse12 .cse15 .cse16 .cse18)))) (store .cse21 .cse19 (+ (select .cse22 .cse19) (select (select (store .cse20 |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse17 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse12 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse15 .cse16 .cse17 .cse18))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse19) .cse15 .cse16 .cse17 .cse18)))))))))))) (+ (* 2 ~N~0) (* ~N~0 ~N~0))) (< 2 ~N~0) (not (< |c_ULTIMATE.start_main_~i~0#1| ~N~0))))) is different from false [2022-07-19 10:47:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:47:11,632 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2022-07-19 10:47:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-19 10:47:11,633 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-07-19 10:47:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:47:11,635 INFO L225 Difference]: With dead ends: 93 [2022-07-19 10:47:11,635 INFO L226 Difference]: Without dead ends: 80 [2022-07-19 10:47:11,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 74.8s TimeCoverageRelationStatistics Valid=293, Invalid=3126, Unknown=7, NotChecked=114, Total=3540 [2022-07-19 10:47:11,637 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:47:11,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 582 Invalid, 0 Unknown, 91 Unchecked, 3.0s Time] [2022-07-19 10:47:11,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-19 10:47:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 65. [2022-07-19 10:47:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.171875) internal successors, (75), 64 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2022-07-19 10:47:11,655 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 31 [2022-07-19 10:47:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:47:11,655 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2022-07-19 10:47:11,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:11,656 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2022-07-19 10:47:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-19 10:47:11,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:47:11,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:47:11,678 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 10:47:11,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:11,872 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:47:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:47:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash 207824378, now seen corresponding path program 5 times [2022-07-19 10:47:11,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:47:11,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735124030] [2022-07-19 10:47:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:47:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:47:11,907 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:47:11,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038440371] [2022-07-19 10:47:11,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 10:47:11,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:11,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:47:11,910 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 10:47:11,911 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 10:47:11,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-19 10:47:11,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:47:11,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 10:47:11,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:47:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 10:47:12,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:47:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 10:47:12,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:47:12,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735124030] [2022-07-19 10:47:12,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:47:12,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038440371] [2022-07-19 10:47:12,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038440371] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:47:12,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:47:12,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-19 10:47:12,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929562727] [2022-07-19 10:47:12,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:47:12,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 10:47:12,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:47:12,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 10:47:12,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-19 10:47:12,100 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:47:12,273 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2022-07-19 10:47:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 10:47:12,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-07-19 10:47:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:47:12,274 INFO L225 Difference]: With dead ends: 116 [2022-07-19 10:47:12,274 INFO L226 Difference]: Without dead ends: 74 [2022-07-19 10:47:12,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-19 10:47:12,275 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 78 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:47:12,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 34 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:47:12,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-19 10:47:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2022-07-19 10:47:12,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-07-19 10:47:12,288 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 33 [2022-07-19 10:47:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:47:12,288 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-07-19 10:47:12,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:12,289 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-07-19 10:47:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 10:47:12,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:47:12,290 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:47:12,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 10:47:12,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:12,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:47:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:47:12,500 INFO L85 PathProgramCache]: Analyzing trace with hash 236928956, now seen corresponding path program 6 times [2022-07-19 10:47:12,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:47:12,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119257858] [2022-07-19 10:47:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:47:12,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:47:12,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:47:12,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998330804] [2022-07-19 10:47:12,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-19 10:47:12,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:12,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:47:12,550 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 10:47:12,574 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 10:47:12,618 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-07-19 10:47:12,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:47:12,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 10:47:12,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:47:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 10:47:12,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:47:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 10:47:12,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:47:12,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119257858] [2022-07-19 10:47:12,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:47:12,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998330804] [2022-07-19 10:47:12,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998330804] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:47:12,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:47:12,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-19 10:47:12,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419659843] [2022-07-19 10:47:12,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:47:12,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 10:47:12,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:47:12,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 10:47:12,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-19 10:47:12,729 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:12,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:47:12,878 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2022-07-19 10:47:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 10:47:12,879 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-19 10:47:12,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:47:12,879 INFO L225 Difference]: With dead ends: 69 [2022-07-19 10:47:12,879 INFO L226 Difference]: Without dead ends: 53 [2022-07-19 10:47:12,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-19 10:47:12,880 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:47:12,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 25 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:47:12,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-19 10:47:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2022-07-19 10:47:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-07-19 10:47:12,889 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 35 [2022-07-19 10:47:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:47:12,889 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-07-19 10:47:12,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:47:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-07-19 10:47:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 10:47:12,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:47:12,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:47:12,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 10:47:13,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:13,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:47:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:47:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash 315843584, now seen corresponding path program 7 times [2022-07-19 10:47:13,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:47:13,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375580625] [2022-07-19 10:47:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:47:13,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:47:13,135 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:47:13,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396300846] [2022-07-19 10:47:13,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-19 10:47:13,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:47:13,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:47:13,147 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 10:47:13,152 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 10:47:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:47:13,236 WARN L261 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 90 conjunts are in the unsatisfiable core [2022-07-19 10:47:13,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:47:13,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-19 10:47:13,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 10:47:13,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 10:47:13,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-07-19 10:47:13,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-07-19 10:47:13,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:13,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-07-19 10:47:13,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:13,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 56 [2022-07-19 10:47:13,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 52 [2022-07-19 10:47:13,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:13,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 53 [2022-07-19 10:47:13,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:13,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:13,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 55 [2022-07-19 10:47:14,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 55 [2022-07-19 10:47:14,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:14,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 61 [2022-07-19 10:47:14,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:47:14,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:47:14,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 64 [2022-07-19 10:47:14,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 54 [2022-07-19 10:47:14,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 39 [2022-07-19 10:47:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:47:14,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:50:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:50:28,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:50:28,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375580625] [2022-07-19 10:50:28,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:50:28,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396300846] [2022-07-19 10:50:28,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396300846] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:50:28,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:50:28,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 55 [2022-07-19 10:50:28,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117948413] [2022-07-19 10:50:28,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:50:28,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-19 10:50:28,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:50:28,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-19 10:50:28,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2749, Unknown=27, NotChecked=0, Total=2970 [2022-07-19 10:50:28,907 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 55 states, 55 states have (on average 1.309090909090909) internal successors, (72), 55 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)